<PAGE> 1

As filed with the Securities and Exchange Commission on July 23, 2009
Registration No. ___________


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933

                               BCSB BANCORP, INC.
                               ------------------
             (exact name of registrant as specified in its charter)

          MARYLAND                                    26-1424764
-------------------------------           ---------------------------------
(State or other jurisdiction of           (IRS Employer Identification No.)
incorporation or organization)

4111 E. JOPPA ROAD, SUITE 300, BALTIMORE, MARYLAND           21236
--------------------------------------------------           -----
(Address of Principal Executive Offices)                    Zip Code

                               BCSB BANCORP, INC.
                           2009 EQUITY INCENTIVE PLAN
                           --------------------------

                     BALTIMORE COUNTY SAVINGS BANK, F.S.B.
                 AMENDED AND RESTATED DEFERRED COMPENSATION PLAN
                 ----------------------------------------------
                            (Full Title of the Plan)

                                                  COPIES TO:
JOSEPH J. BOUFFARD                                JOEL E. RAPPOPORT
PRESIDENT AND CHIEF EXECUTIVE OFFICER             KILPATRICK STOCKTON LLP
BCSB BANCORP, INC.                                607 14TH STREET, NW, SUITE 900
4111 EAST JOPPA ROAD, SUITE 300                   WASHINGTON, D.C.  20005
BALTIMORE, MD 21236                               (202) 508-5800
(Name and address of agent for service)

(410) 256-5000
Telephone number, including area code,
of agent for service

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, a non-accelerated filer, or a smaller reporting company. See
the definitions of "large accelerated filer," "accelerated filer" and "smaller
reporting company" in Rule 12b-2 of the Exchange Act. (Check One):

        Large accelerated filer [ ]     Accelerated filer [ ]
        Non-accelerated filer   [ ]     Smaller reporting company |X|
                 (Do not check if a smaller reporting company)
<TABLE>
<CAPTION>

                                        CALCULATION OF REGISTRATION FEE
======================================================================================================================
                                       Amount          Proposed maximum       Proposed maximum         Amount of
   Title of securities to be           to be          offering price per     aggregate offering      registration
           registered              registered(1)             share                price(4)                fee
----------------------------------------------------------------------------------------------------------------------
         <S>                        <C>                      <C>                 <C>                     <C>
          Common Stock
         $.01 par Value             268,437 (2)              $8.30               $2,228,028              $125

          Common Stock
         $.01 par Value              89,488 (3)              $8.30               $  742,751              $41
======================================================================================================================
</TABLE>
(1)  Together with an indeterminate number of additional shares which may be
     necessary to adjust the number of shares reserved for issuance pursuant to
     the BCSB Bancorp, Inc. 2009 Equity Incentive Plan (the "Equity Plan") and
     the Baltimore County Savings Bank, F.S.B. Amended and Restated Deferred
     Compensation Plan (the "Deferred Compensation Plan") as the result of a
     stock split, stock dividend or similar adjustment to the
     outstanding common stock of BCSB Bancorp, Inc. (the "Common Stock")
     pursuant to 17 C.F.R. ss.230.416(a).
(2)  Represents 268,437 shares which may be issued: (i) upon the exercise of
     options to purchase shares of the Common Stock, or (ii) the distribution of
     shares of Common Stock upon the vesting of stock awards under the Equity
     Plan.
(3)  Represents 89,488 shares that may be distributed under the Deferred
     Compensation Plan.
(4)  Estimated solely for the purpose of calculating the registration fee.
     Represents the closing price for the common stock as reported on July 20,
     2009 in accordance with 17 CFR Section 230.457(c) and 230.457(h).

THIS REGISTRATION STATEMENT SHALL BECOME EFFECTIVE IMMEDIATELY UPON FILING IN
ACCORDANCE WITH SECTION 8(A) OF THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND 17 C.F.R. SS.230.462

<PAGE> 2

PART I   INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS

ITEMS 1 (PLAN INFORMATION) AND 2 (REGISTRANT INFORMATION AND EMPLOYEE PLAN
ANNUAL INFORMATION). The documents containing the information for the BCSB
Bancorp, Inc. 2009 Equity Incentive Plan (the "Equity Plan") and the Baltimore
County Savings Bank, F.S.B. Amended and Restated Deferred Compensation Plan (the
"Deferred Compensation Plan")(collectively, the "Plans") specified by Part I of
this Registration Statement will be sent or given to the participants in the
Plans as specified by Rule 428(b)(1). Such documents need not be filed with the
Securities and Exchange Commission (the "SEC") either as a part of this
Registration Statement or as a prospectus or prospectus supplement pursuant to
Rule 424 in reliance on Rule 428. Such documents and the information
incorporated by reference pursuant to Item 3 of Part II of this Registration
Statement, taken together, constitute a prospectus for the Registration
Statement.

PART II   INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE

         The following documents filed or to be filed by BCSB Bancorp, Inc. (the
"Registrant" or the "Corporation") with the SEC are incorporated by reference in
this Registration Statement:

         (a) The Registrant's Annual Report on Form 10-K for the fiscal year
ended September 30, 2008 filed with the SEC on December 29, 2008, and
subsequently amended on April 2, 2009 (File No. 000-53163).

         (b) The Registrant's Quarterly Report on Form 10-Q (File No. 000-53163)
for the quarterly period ended December 31, 2008 and filed with the SEC on
February 6, 2009 and subsequently amended on February 13, 2009, and February 24,
2009.

         (c) The Registrant's Quarterly Report on term 10-Q (File No. 000-53163)
for the quarterly period ended March 31, 2009, filed with the SEC on May 14,
2009.

         (d) The description of the Registrant's common stock contained in
Registrant's Form 8-K12G3 as filed with the SEC on April 10, 2008 (File No.
000-53163).

         (e) Current Reports on Form 8-K filed with the SEC on May 27, 2009 and
March 25, 2009 (excluding those portions of the reports filed under items 2.02,
7.01 and 9.01 of Form 8-K or 8-K/A).

         (f) All documents filed by the Registrant and the Plans, where
applicable, pursuant to Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act
after the date hereof and prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold (in each case other than those portions
furnished under items 2.02, 7.01 and 9.01 of Form 8-K or 8-K/A).

         ANY STATEMENT CONTAINED IN THIS REGISTRATION STATEMENT, OR IN A
DOCUMENT INCORPORATED OR DEEMED TO BE INCORPORATED BY REFERENCE HEREIN, SHALL BE
DEEMED TO BE MODIFIED OR SUPERSEDED FOR PURPOSES OF THIS REGISTRATION STATEMENT
TO THE EXTENT THAT A STATEMENT CONTAINED HEREIN, OR IN ANY OTHER SUBSEQUENTLY
FILED DOCUMENT WHICH ALSO IS INCORPORATED OR DEEMED TO BE INCORPORATED BY
REFERENCE HEREIN, MODIFIES OR SUPERSEDES SUCH STATEMENT. ANY SUCH STATEMENT SO
MODIFIED OR SUPERSEDED SHALL NOT BE DEEMED, EXCEPT AS SO MODIFIED OR SUPERSEDED,
TO CONSTITUTE A PART OF THIS REGISTRATION STATEMENT.

<PAGE> 3

ITEM 4.  DESCRIPTION OF SECURITIES

         Not applicable, as the Registrant's Common Stock is registered under
Section 12 of the Securities Exchange Act of 1934, as amended.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL

         None.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

         Directors, officers and employees of BCSB Bancorp, Inc. may be entitled
to benefit from the indemnification provisions contained in the Maryland General
Corporation Law (the "MGCL") and the Registrant's Articles of Incorporation. The
general effect of these provisions is summarized below.

         Article EIGHTH, Section K of the Registrant's Articles of Incorporation
provides:

                  To the fullest extent permitted by Maryland statutory or
                  decisional law, as amended or interpreted, no director or
                  officer of this Corporation shall be personally liable to the
                  Corporation or its stockholders for monetary damages. No
                  amendment of the Articles of Incorporation of the Corporation
                  or repeal of any of its provisions shall limit or eliminate
                  the benefits provided to directors and officers under this
                  provision with respect to any act or omission which occurred
                  prior to such amendment or repeal.

         In addition, Article TENTH of the Registrant's Articles of
Incorporation provides:

                  The Corporation shall indemnify (A) its directors and
                  officers, whether serving the Corporation or at its request
                  any other entity, to the fullest extent required or permitted
                  by the general laws of the State of Maryland now or hereafter
                  in force, including the advances of expenses under the
                  procedures required, and (B) other employees and agents to
                  such extent as shall be authorized by the Board of Directors
                  or the Corporation's Bylaws and be permitted by law. The
                  foregoing rights of indemnification shall not be exclusive of
                  any rights to which those seeking indemnification may be
                  entitled. The Board of Directors may take such action as is
                  necessary to carry out these indemnification provisions and is
                  expressly empowered to adopt, approve and amend from time to
                  time such Bylaws, resolutions or contracts implementing such
                  provisions or such further indemnification arrangements as may
                  be permitted by law. No amendment of the Articles of
                  Incorporation of the Corporation shall limit or eliminate the
                  right to indemnification provided hereunder with respect to
                  acts or omissions occurring prior to such amendment or repeal.

         In accordance with Section 2-418 of the MGCL, directors, officers and
employees of the Company generally shall be indemnified in the defense of a
proceeding if they are successful, on the merits or otherwise, and in other
circumstances unless (i) the act or omission was material to the matter giving
rise to the proceeding and either was committed in bad faith or was the result
of active and deliberate dishonesty; (ii) the director actually received an
improper personal benefit, in money, property or services; or, (iii) in the case
of any criminal proceeding, the director had reasonable cause to believe that

<PAGE> 4

the act or omission was unlawful. Additionally, a director may not be
indemnified with respect to any proceeding by or in the right of the Company in
which the director shall have been adjudged to be liable to the Company.
Directors and officers may be provided for judgments, penalties, fines,
settlements and reasonable expenses, including attorney's fees, actually
incurred in connection with any threatened, pending, or completed action, suit,
or proceeding. This applies to any civil, criminal, investigative or
administrative action provided that the director or officer involved acted in
good faith, in a manner he or she reasonably believed to be in or not opposed to
the best interests of the Company and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED

         None.

ITEM 8.  EXHIBITS

         The following exhibits are filed with or incorporated by reference into
this registration statement on Form S-8 (numbering corresponds generally to the
Exhibit Table in Item 601 of Regulation S-K).

         List of Exhibits (filed herewith unless otherwise noted):

         5.0   Opinion of Kilpatrick Stockton LLP as to the legality of the
               Common Stock to be issued
         10.0  BCSB Bancorp, Inc. 2009 Equity Incentive Plan (1)
         10.1  Form of Equity Award Agreements
         10.2  Baltimore County Savings Bank, F.S.B. Amended and Restated
               Deferred Compensation Plan (2)
         23.1  Consent of Kilpatrick Stockton LLP (contained in the Opinion
               included in Exhibit 5.0)
         23.2  Consent of Stegman & Company
         24    Power of Attorney (contained on the signature pages)

         --------------
         (1) Incorporated by reference to the Registrant's Form DEF14A filed
             with the SEC on April 10, 2009.
         (2) Incorporated by reference to Exhibit 10.11 to the Registrant's Form
             10-K for the fiscal year ended September 30, 2008 filed with the
             SEC on December 29, 2008.

ITEM 9.  UNDERTAKINGS

         (a) The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

                  (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act of 1933;

                  (ii) To reflect in the prospectus any facts or events arising
after the effective date of the registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in the volume
of securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Securities and Exchange Commission pursuant to Rule 424(b) if, in
the aggregate, the changes in volume and price represent no more than 20 percent

<PAGE>5

change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective registration statement; and

                  (iii) To include any material information with respect to the
plan of distribution not previously disclosed in the registration statement or
any material change to such information in the registration statement.

         PROVIDED, HOWEVER, that paragraphs (a)(1)(i) and (a)(1)(ii) of this
section do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in reports filed or
furnished to the Securities and Exchange Commission by the registrant pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934 that are
incorporated by reference into this Registration Statement.

         (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof;

         (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering;

         (4) That, for the purpose of determining liability of the Registrant
under the Securities Act to any purchaser in the initial distribution of the
securities, in a primary offering of securities of the Registrant pursuant to
this Registration Statement, regardless of the underwriting method used to sell
the securities to the purchaser, if the securities are offered or sold to such
purchaser by means of any of the following communications, the Registrant will
be a seller to the purchaser and will be considered to offer or sell such
securities to such purchaser: (i) any preliminary prospectus or prospectus of
the undersigned Registrant relating to the offering required to be filed
pursuant to Rule 424; (ii) any free writing prospectus relating to the offering
prepared by or on behalf of the undersigned Registrant or used or referred to by
the undersigned Registrant; (iii) the portion of any other free writing
prospectus relating to the offering containing material information about the
undersigned Registrant or its securities provided by or on behalf of the
undersigned registrant; and (iv) any other communication that is an offer in the
offering made by the undersigned Registrant to the purchaser;

         (5) For purposes of determining any liability under the Securities Act
of 1933, each filing of the Registrant's annual report pursuant to section 13(a)
or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable,
each filing of an employee benefit plan's annual report pursuant to section
15(d) of the Securities Exchange Act of 1934) that is incorporated by reference
in the registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof; and

         (6) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that, in the opinion of the SEC, such
indemnification is against public policy as expressed in such Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred
or paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question of whether such indemnification by it is against
public policy as expressed in such Act and will be governed by the final
adjudication of such issue.

<PAGE> 6
                                   SIGNATURES

THE REGISTRANT

         Pursuant to the requirements of the Securities Act of 1933, BCSB
Bancorp, Inc. certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Baltimore, State of Maryland, on July 23, 2009.


                             BCSB BANCORP, INC.



                             By: /s/ Joseph J. Bouffard
                                 -----------------------------------------
                                 Joseph J. Bouffard
                                 President, Chief Executive Officer and Director
                                 (Principal executive officer)

         KNOW ALL MEN BY THESE PRESENT, that each person whose signature appears
below (other than Mr. Bouffard) constitutes and appoints Joseph J. Bouffard, as
the true and lawful attorney-in-fact and agent with full power of substitution
and resubstitution, for him or her and in his or her name, place and stead, in
any and all capacities to sign any or all amendments to the Form S-8
registration statement, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the United States Securities and
Exchange Commission, granting unto said attorney-in-fact and agent full power
and authority to do and perform each and every act and things requisite and
necessary to be done as fully, and to all intents and purposes, as he might or
could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent or his substitute, may lawfully do or cause to be
done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
<TABLE>
<CAPTION>

       Name                                       Title                            Date
       ----                                       -----                            ----
<S>                                         <C>                                 <C>
/s/ Henry V. Kahl                           Chairman of the Board               July 23, 2009
------------------------------------
Henry V. Kahl



/s/ Joseph J. Bouffard                      President, Chief Executive Officer  July 23, 2009
------------------------------------        and Director
Joseph J. Bouffard                          (Principal executive officer)



/s/ Anthony R. Cole                         Executive Vice President and        July 23, 2009
------------------------------------        Chief Financial Officer
Anthony R. Cole                             (Principal financial and
                                            accounting officer)

<PAGE> 7

/s/ H. Adrian Cox                           Vice Chairman of the Board          July 23, 2009
------------------------------------
H. Adrian Cox



/s/ William J. Kappauf, Jr.                 Director                            July 23, 2009
------------------------------------
William J. Kappauf, Jr.



/s/ William M. Loughran                     Director                            July 23, 2009
------------------------------------
William M. Loughran



/s/ John J. Panzer, Jr.                     Director                            July 23, 2009
------------------------------------
John J. Panzer, Jr.



/s/ Michael J. Klein                        Director                            July 23, 2009
------------------------------------
Michael J. Klein



/s/ Ernest A. Moretti                       Director                            July 23, 2009
------------------------------------
Ernest A. Moretti
</TABLE>
[{"type": "S-8", "sequence": "1", "filename": "bcsbs8july22-09.txt", "secsgml_size_bytes": 23303}]
{"company-data": {"conformed-name": "BCSB Bancorp Inc.", "cik": "0001391137", "assigned-sic": "6035", "irs-number": "261424764", "fiscal-year-end": "0930"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-160765", "film-number": "09959680"}, "business-address": {"street1": "4111 E. JOPPA ROAD", "city": "BALTIMORE", "state": "MD", "zip": "21236", "phone": "410-256-5000"}, "mail-address": {"street1": "4111 E. JOPPA ROAD", "city": "BALTIMORE", "state": "MD", "zip": "21236"}}
1

As filed with the Securities and Exchange Commission on July 23, 2009
Registration No. ___________

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933

                               BCSB BANCORP, INC.
                               ------------------
             (exact name of registrant as specified in its charter)

          MARYLAND                                    26-1424764
-------------------------------           ---------------------------------
(State or other jurisdiction of           (IRS Employer Identification No.)
incorporation or organization)

4111 E. JOPPA ROAD, SUITE 300, BALTIMORE, MARYLAND           21236
--------------------------------------------------           -----
(Address of Principal Executive Offices)                    Zip Code

                               BCSB BANCORP, INC.
                           2009 EQUITY INCENTIVE PLAN
                           --------------------------

                     BALTIMORE COUNTY SAVINGS BANK, F.S.B.
                 AMENDED AND RESTATED DEFERRED COMPENSATION PLAN
                 ----------------------------------------------
                            (Full Title of the Plan)

                                                  COPIES TO:
JOSEPH J. BOUFFARD                                JOEL E. RAPPOPORT
PRESIDENT AND CHIEF EXECUTIVE OFFICER             KILPATRICK STOCKTON LLP
BCSB BANCORP, INC.                                607 14TH STREET, NW, SUITE 900
4111 EAST JOPPA ROAD, SUITE 300                   WASHINGTON, D.C.  20005
BALTIMORE, MD 21236                               (202) 508-5800
(Name and address of agent for service)

(410) 256-5000
Telephone number, including area code,
of agent for service

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, a non-accelerated filer, or a smaller reporting company. See
the definitions of "large accelerated filer," "accelerated filer" and "smaller
reporting company" in Rule 12b-2 of the Exchange Act. (Check One):

        Large accelerated filer [ ]     Accelerated filer [ ]
        Non-accelerated filer   [ ]     Smaller reporting company |X|
                 (Do not check if a smaller reporting company)
CALCULATION OF REGISTRATION FEE
======================================================================================================================
                                       Amount          Proposed maximum       Proposed maximum         Amount of
   Title of securities to be           to be          offering price per     aggregate offering      registration
           registered              registered(1)             share                price(4)                fee
----------------------------------------------------------------------------------------------------------------------
Common Stock
         $.01 par Value             268,437 (2)              $8.30               $2,228,028              $125

          Common Stock
         $.01 par Value              89,488 (3)              $8.30               $  742,751              $41
======================================================================================================================
(1)  Together with an indeterminate number of additional shares which may be
     necessary to adjust the number of shares reserved for issuance pursuant to
     the BCSB Bancorp, Inc. 2009 Equity Incentive Plan (the "Equity Plan") and
     the Baltimore County Savings Bank, F.S.B. Amended and Restated Deferred
     Compensation Plan (the "Deferred Compensation Plan") as the result of a
     stock split, stock dividend or similar adjustment to the
     outstanding common stock of BCSB Bancorp, Inc. (the "Common Stock")
     pursuant to 17 C.F.R. ss.230.416(a).
(2)  Represents 268,437 shares which may be issued: (i) upon the exercise of
     options to purchase shares of the Common Stock, or (ii) the distribution of
     shares of Common Stock upon the vesting of stock awards under the Equity
     Plan.
(3)  Represents 89,488 shares that may be distributed under the Deferred
     Compensation Plan.
(4)  Estimated solely for the purpose of calculating the registration fee.
     Represents the closing price for the common stock as reported on July 20,
     2009 in accordance with 17 CFR Section 230.457(c) and 230.457(h).

THIS REGISTRATION STATEMENT SHALL BECOME EFFECTIVE IMMEDIATELY UPON FILING IN
ACCORDANCE WITH SECTION 8(A) OF THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND 17 C.F.R. SS.230.462
2

PART I   INFORMATION REQUIRED IN THE SECTION 10(A) PROSPECTUS

ITEMS 1 (PLAN INFORMATION) AND 2 (REGISTRANT INFORMATION AND EMPLOYEE PLAN
ANNUAL INFORMATION). The documents containing the information for the BCSB
Bancorp, Inc. 2009 Equity Incentive Plan (the "Equity Plan") and the Baltimore
County Savings Bank, F.S.B. Amended and Restated Deferred Compensation Plan (the
"Deferred Compensation Plan")(collectively, the "Plans") specified by Part I of
this Registration Statement will be sent or given to the participants in the
Plans as specified by Rule 428(b)(1). Such documents need not be filed with the
Securities and Exchange Commission (the "SEC") either as a part of this
Registration Statement or as a prospectus or prospectus supplement pursuant to
Rule 424 in reliance on Rule 428. Such documents and the information
incorporated by reference pursuant to Item 3 of Part II of this Registration
Statement, taken together, constitute a prospectus for the Registration
Statement.

PART II   INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE

         The following documents filed or to be filed by BCSB Bancorp, Inc. (the
"Registrant" or the "Corporation") with the SEC are incorporated by reference in
this Registration Statement:

         (a) The Registrant's Annual Report on Form 10-K for the fiscal year
ended September 30, 2008 filed with the SEC on December 29, 2008, and
subsequently amended on April 2, 2009 (File No. 000-53163).

         (b) The Registrant's Quarterly Report on Form 10-Q (File No. 000-53163)
for the quarterly period ended December 31, 2008 and filed with the SEC on
February 6, 2009 and subsequently amended on February 13, 2009, and February 24,
2009.

         (c) The Registrant's Quarterly Report on term 10-Q (File No. 000-53163)
for the quarterly period ended March 31, 2009, filed with the SEC on May 14,
2009.

         (d) The description of the Registrant's common stock contained in
Registrant's Form 8-K12G3 as filed with the SEC on April 10, 2008 (File No.
000-53163).

         (e) Current Reports on Form 8-K filed with the SEC on May 27, 2009 and
March 25, 2009 (excluding those portions of the reports filed under items 2.02,
7.01 and 9.01 of Form 8-K or 8-K/A).

         (f) All documents filed by the Registrant and the Plans, where
applicable, pursuant to Sections 13(a), 13(c), 14, or 15(d) of the Exchange Act
after the date hereof and prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold (in each case other than those portions
furnished under items 2.02, 7.01 and 9.01 of Form 8-K or 8-K/A).

         ANY STATEMENT CONTAINED IN THIS REGISTRATION STATEMENT, OR IN A
DOCUMENT INCORPORATED OR DEEMED TO BE INCORPORATED BY REFERENCE HEREIN, SHALL BE
DEEMED TO BE MODIFIED OR SUPERSEDED FOR PURPOSES OF THIS REGISTRATION STATEMENT
TO THE EXTENT THAT A STATEMENT CONTAINED HEREIN, OR IN ANY OTHER SUBSEQUENTLY
FILED DOCUMENT WHICH ALSO IS INCORPORATED OR DEEMED TO BE INCORPORATED BY
REFERENCE HEREIN, MODIFIES OR SUPERSEDES SUCH STATEMENT. ANY SUCH STATEMENT SO
MODIFIED OR SUPERSEDED SHALL NOT BE DEEMED, EXCEPT AS SO MODIFIED OR SUPERSEDED,
TO CONSTITUTE A PART OF THIS REGISTRATION STATEMENT.
3

ITEM 4.  DESCRIPTION OF SECURITIES

         Not applicable, as the Registrant's Common Stock is registered under
Section 12 of the Securities Exchange Act of 1934, as amended.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL

         None.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

         Directors, officers and employees of BCSB Bancorp, Inc. may be entitled
to benefit from the indemnification provisions contained in the Maryland General
Corporation Law (the "MGCL") and the Registrant's Articles of Incorporation. The
general effect of these provisions is summarized below.

         Article EIGHTH, Section K of the Registrant's Articles of Incorporation
provides:

                  To the fullest extent permitted by Maryland statutory or
                  decisional law, as amended or interpreted, no director or
                  officer of this Corporation shall be personally liable to the
                  Corporation or its stockholders for monetary damages. No
                  amendment of the Articles of Incorporation of the Corporation
                  or repeal of any of its provisions shall limit or eliminate
                  the benefits provided to directors and officers under this
                  provision with respect to any act or omission which occurred
                  prior to such amendment or repeal.

         In addition, Article TENTH of the Registrant's Articles of
Incorporation provides:

                  The Corporation shall indemnify (A) its directors and
                  officers, whether serving the Corporation or at its request
                  any other entity, to the fullest extent required or permitted
                  by the general laws of the State of Maryland now or hereafter
                  in force, including the advances of expenses under the
                  procedures required, and (B) other employees and agents to
                  such extent as shall be authorized by the Board of Directors
                  or the Corporation's Bylaws and be permitted by law. The
                  foregoing rights of indemnification shall not be exclusive of
                  any rights to which those seeking indemnification may be
                  entitled. The Board of Directors may take such action as is
                  necessary to carry out these indemnification provisions and is
                  expressly empowered to adopt, approve and amend from time to
                  time such Bylaws, resolutions or contracts implementing such
                  provisions or such further indemnification arrangements as may
                  be permitted by law. No amendment of the Articles of
                  Incorporation of the Corporation shall limit or eliminate the
                  right to indemnification provided hereunder with respect to
                  acts or omissions occurring prior to such amendment or repeal.

         In accordance with Section 2-418 of the MGCL, directors, officers and
employees of the Company generally shall be indemnified in the defense of a
proceeding if they are successful, on the merits or otherwise, and in other
circumstances unless (i) the act or omission was material to the matter giving
rise to the proceeding and either was committed in bad faith or was the result
of active and deliberate dishonesty; (ii) the director actually received an
improper personal benefit, in money, property or services; or, (iii) in the case
of any criminal proceeding, the director had reasonable cause to believe that
4

the act or omission was unlawful. Additionally, a director may not be
indemnified with respect to any proceeding by or in the right of the Company in
which the director shall have been adjudged to be liable to the Company.
Directors and officers may be provided for judgments, penalties, fines,
settlements and reasonable expenses, including attorney's fees, actually
incurred in connection with any threatened, pending, or completed action, suit,
or proceeding. This applies to any civil, criminal, investigative or
administrative action provided that the director or officer involved acted in
good faith, in a manner he or she reasonably believed to be in or not opposed to
the best interests of the Company and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED

         None.

ITEM 8.  EXHIBITS

         The following exhibits are filed with or incorporated by reference into
this registration statement on Form S-8 (numbering corresponds generally to the
Exhibit Table in Item 601 of Regulation S-K).

         List of Exhibits (filed herewith unless otherwise noted):

         5.0   Opinion of Kilpatrick Stockton LLP as to the legality of the
               Common Stock to be issued
         10.0  BCSB Bancorp, Inc. 2009 Equity Incentive Plan (1)
         10.1  Form of Equity Award Agreements
         10.2  Baltimore County Savings Bank, F.S.B. Amended and Restated
               Deferred Compensation Plan (2)
         23.1  Consent of Kilpatrick Stockton LLP (contained in the Opinion
               included in Exhibit 5.0)
         23.2  Consent of Stegman & Company
         24    Power of Attorney (contained on the signature pages)

         --------------
         (1) Incorporated by reference to the Registrant's Form DEF14A filed
             with the SEC on April 10, 2009.
         (2) Incorporated by reference to Exhibit 10.11 to the Registrant's Form
             10-K for the fiscal year ended September 30, 2008 filed with the
             SEC on December 29, 2008.

ITEM 9.  UNDERTAKINGS

         (a) The undersigned Registrant hereby undertakes:

         (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

                  (i) To include any prospectus required by Section 10(a)(3) of
the Securities Act of 1933;

                  (ii) To reflect in the prospectus any facts or events arising
after the effective date of the registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the registration
statement. Notwithstanding the foregoing, any increase or decrease in the volume
of securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Securities and Exchange Commission pursuant to Rule 424(b) if, in
the aggregate, the changes in volume and price represent no more than 20 percent
5

change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective registration statement; and

                  (iii) To include any material information with respect to the
plan of distribution not previously disclosed in the registration statement or
any material change to such information in the registration statement.

         PROVIDED, HOWEVER, that paragraphs (a)(1)(i) and (a)(1)(ii) of this
section do not apply if the information required to be included in a
post-effective amendment by those paragraphs is contained in reports filed or
furnished to the Securities and Exchange Commission by the registrant pursuant
to Section 13 or 15(d) of the Securities Exchange Act of 1934 that are
incorporated by reference into this Registration Statement.

         (2) That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof;

         (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering;

         (4) That, for the purpose of determining liability of the Registrant
under the Securities Act to any purchaser in the initial distribution of the
securities, in a primary offering of securities of the Registrant pursuant to
this Registration Statement, regardless of the underwriting method used to sell
the securities to the purchaser, if the securities are offered or sold to such
purchaser by means of any of the following communications, the Registrant will
be a seller to the purchaser and will be considered to offer or sell such
securities to such purchaser: (i) any preliminary prospectus or prospectus of
the undersigned Registrant relating to the offering required to be filed
pursuant to Rule 424; (ii) any free writing prospectus relating to the offering
prepared by or on behalf of the undersigned Registrant or used or referred to by
the undersigned Registrant; (iii) the portion of any other free writing
prospectus relating to the offering containing material information about the
undersigned Registrant or its securities provided by or on behalf of the
undersigned registrant; and (iv) any other communication that is an offer in the
offering made by the undersigned Registrant to the purchaser;

         (5) For purposes of determining any liability under the Securities Act
of 1933, each filing of the Registrant's annual report pursuant to section 13(a)
or section 15(d) of the Securities Exchange Act of 1934 (and, where applicable,
each filing of an employee benefit plan's annual report pursuant to section
15(d) of the Securities Exchange Act of 1934) that is incorporated by reference
in the registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof; and

         (6) Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that, in the opinion of the SEC, such
indemnification is against public policy as expressed in such Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred
or paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question of whether such indemnification by it is against
public policy as expressed in such Act and will be governed by the final
adjudication of such issue.
6
                                   SIGNATURES

THE REGISTRANT

         Pursuant to the requirements of the Securities Act of 1933, BCSB
Bancorp, Inc. certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Baltimore, State of Maryland, on July 23, 2009.

                             BCSB BANCORP, INC.

                             By: /s/ Joseph J. Bouffard
                                 -----------------------------------------
                                 Joseph J. Bouffard
                                 President, Chief Executive Officer and Director
                                 (Principal executive officer)

         KNOW ALL MEN BY THESE PRESENT, that each person whose signature appears
below (other than Mr. Bouffard) constitutes and appoints Joseph J. Bouffard, as
the true and lawful attorney-in-fact and agent with full power of substitution
and resubstitution, for him or her and in his or her name, place and stead, in
any and all capacities to sign any or all amendments to the Form S-8
registration statement, and to file the same, with all exhibits thereto, and
other documents in connection therewith, with the United States Securities and
Exchange Commission, granting unto said attorney-in-fact and agent full power
and authority to do and perform each and every act and things requisite and
necessary to be done as fully, and to all intents and purposes, as he might or
could do in person, hereby ratifying and confirming all that said
attorney-in-fact and agent or his substitute, may lawfully do or cause to be
done by virtue hereof.

         Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
Name                                       Title                            Date
       ----                                       -----                            ----
/s/ Henry V. Kahl                           Chairman of the Board               July 23, 2009
------------------------------------
Henry V. Kahl

/s/ Joseph J. Bouffard                      President, Chief Executive Officer  July 23, 2009
------------------------------------        and Director
Joseph J. Bouffard                          (Principal executive officer)

/s/ Anthony R. Cole                         Executive Vice President and        July 23, 2009
------------------------------------        Chief Financial Officer
Anthony R. Cole                             (Principal financial and
                                            accounting officer)
7

/s/ H. Adrian Cox                           Vice Chairman of the Board          July 23, 2009
------------------------------------
H. Adrian Cox

/s/ William J. Kappauf, Jr.                 Director                            July 23, 2009
------------------------------------
William J. Kappauf, Jr.

/s/ William M. Loughran                     Director                            July 23, 2009
------------------------------------
William M. Loughran

/s/ John J. Panzer, Jr.                     Director                            July 23, 2009
------------------------------------
John J. Panzer, Jr.

/s/ Michael J. Klein                        Director                            July 23, 2009
------------------------------------
Michael J. Klein

/s/ Ernest A. Moretti                       Director                            July 23, 2009
------------------------------------
Ernest A. Moretti