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     <!-- Control Number: 8k                                                           -->
     <!-- Filing Type:    8k                                                               -->
     <!-- Client Name:    1st Page                                                         -->
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<TD><H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SECURITIES AND EXCHANGE COMMISSION<BR>Washington, D.C. 20549  </FONT></H1></TD></TR>
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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=4>FORM
8-K  </FONT></H1></TD></TR>
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<TD><H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>CURRENT
REPORT<BR>Pursuant to Section 13 or 15(d) of the<BR> Securities Exchange Act of 1934  </FONT></H1></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- DATE -->August 4, 2004 (August 4, 2004)</B></FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><HR NOSHADE SIZE=1 WIDTH=96%></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">Date of Report (Date of earliest event reported) </FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- Name of Registrant -->RCN Corporation</B></FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><HR NOSHADE SIZE=1 WIDTH=96%></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">(Exact Name of Registrant as Specified in its Charter)</FONT></TD></TR>
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<TD ALIGN=CENTER WIDTH=33%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;<!-- STATE-->Delaware </FONT></TD>
<TD ALIGN=CENTER WIDTH=34%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;<!-- FILE NO.-->0-22825 </FONT></TD>
<TD ALIGN=CENTER WIDTH=33%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;<!-- IRS NO.-->22-3498533 </FONT></TD>
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<TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(State Of Incorporation)
</FONT></TD>
<TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(Commission<BR>File Number) </FONT></TD>
<TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(IRS Employer<BR> Identification No.) </FONT></TD>
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     <TD WIDTH="75" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
     <TD WIDTH="350" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- ADDRESS -->105 Carnegie Center<BR>Princeton, NJ </B></FONT></TD>
     <TD WIDTH="100" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- ZIP CODE -->08540-6215</B></FONT></TD>
     <TD WIDTH="75" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD></TR>
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     <TD COLSPAN=4 ALIGN="CENTER"><HR NOSHADE SIZE=1 width=96%></TD></TR>
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     <TD WIDTH="75" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD>
     <TD WIDTH="350" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">(Address of Principal Executive Offices) </FONT></TD>
     <TD WIDTH="100" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">(Zip Code)</FONT></TD>
     <TD WIDTH="75" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;</FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- TELEPHONE NO. -->(609) 734-3700</B></FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><HR NOSHADE SIZE=1 WIDTH=96%></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">(Registrant's Telephone Number, including Area Code)</FONT></TD></TR>
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<TABLE WIDTH="600" BORDER="0" CELLPADDING="0" CELLSPACING="0">
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"><B>&nbsp;<!-- FORMER NAME OR ADDRESS -->Not Applicable</B></FONT></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><HR NOSHADE SIZE=1 WIDTH=96%></TD></TR>
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     <TD WIDTH="600" ALIGN="CENTER"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">(Former Name or Former Address, if Changed Since Last Report) </FONT></TD></TR>
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<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Item
5.&nbsp;&nbsp;&nbsp;Other Events and Required FD Disclosure. </FONT></P></TD></TR>
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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On
August 4, 2004, RCN Corporation (&#147;RCN&#148;) announced that it has deployed Voice
over Internet Protocol (VoIP) technology in its Chicago market, the latest in a series of
initiatives in Chicago. This rollout, currently available where the upgrade has been
completed, is expected to be available in RCN&#146;s entire Chicago footprint by October
31, 2004. The press release with respect thereto is attached hereto as Exhibit 99.1. </FONT></TD></TR>
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<P ALIGN=LEFT><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Item
7.&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.</FONT></P></TD></TR>
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<TD WIDTH="13%" ALIGN="Right"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>(a)</FONT></TD>
<TD WIDTH=3%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=84%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Exhibits<BR><BR>Exhibit 99.1&nbsp;&nbsp;RCN Corporation Press Release dated August 4, 2004. </FONT></TD>
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<TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>SIGNATURE </FONT></TD></TR>
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<TD><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly authorized. </FONT></TD></TR>
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    <TD WIDTH="8%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; <!-- TYPE "DATE:" HERE--> </FONT></TD>
    <TD WIDTH="44%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD WIDTH="48%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;<!-- COMPANY -->RCN Corporation </FONT></TD>
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    <TD WIDTH="8%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2"></FONT></TD>
    <TD WIDTH="39%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; <!-- DATE--> </FONT></TD>
    <TD WIDTH="5%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD WIDTH="5%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">By: </FONT></TD>
    <TD WIDTH="43%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp;<!-- NAME -->/s/&nbsp;&nbsp;Deborah M. Royster </FONT></TD>
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    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD> <HR NOSHADE SIZE="1"> </TD>
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    <TD WIDTH="57%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD WIDTH="8%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">NAME:&nbsp;</FONT></TD>
    <TD WIDTH="35%"><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; <!-- NAME -->Deborah M. Royster</FONT></TD>
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    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; </FONT></TD>
    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">TITLE:&nbsp;</FONT></TD>
    <TD><FONT FACE="Times New Roman, Times, Serif" SIZE="2">&nbsp; <!-- TITLE -->Senior Vice President, General &nbsp;&nbsp;Counsel and Corporate Secretary</FONT></TD></TR>
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<TD WIDTH=8%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;Date: </FONT></TD>
<TD WIDTH=39%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;<!-- DATE-->August 4, 2004</FONT></TD>
<TD WIDTH=53%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
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<TD ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=2>EXHIBIT INDEX </FONT></TD></TR>
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<TD WIDTH="13%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>Exhibit<BR>No. </FONT></TD>
<TD WIDTH=3%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=84%><FONT FACE="Times New Roman, Times, Serif" SIZE=2> </FONT></TD>
</TR>
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<TD WIDTH="13%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=3%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=84%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
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<TD WIDTH="13%" ALIGN="Center"><FONT FACE="Times New Roman, Times, Serif" SIZE=2>99.1 </FONT></TD>
<TD WIDTH=3%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH=84%><FONT FACE="Times New Roman, Times, Serif" SIZE=2>RCN Corporation Press Release dated August 4, 2004.</FONT></TD>
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8K Form
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM
8-K
CURRENT
REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
August 4, 2004 (August 4, 2004)
Date of Report (Date of earliest event reported)
RCN Corporation
(Exact Name of Registrant as Specified in its Charter)
Delaware
0-22825
22-3498533
(State Of Incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)
105 Carnegie Center
Princeton, NJ
08540-6215
(Address of Principal Executive Offices)
(Zip Code)
(609) 734-3700
(Registrant's Telephone Number, including Area Code)
Not Applicable
(Former Name or Former Address, if Changed Since Last Report)
Item
5.   Other Events and Required FD Disclosure.
On
August 4, 2004, RCN Corporation ("RCN") announced that it has deployed Voice
over Internet Protocol (VoIP) technology in its Chicago market, the latest in a series of
initiatives in Chicago. This rollout, currently available where the upgrade has been
completed, is expected to be available in RCN's entire Chicago footprint by October
31, 2004. The press release with respect thereto is attached hereto as Exhibit 99.1.
Item
7.   Financial Statements and Exhibits.
(a)
Exhibits
Exhibit 99.1  RCN Corporation Press Release dated August 4, 2004.
SIGNATURE
Pursuant
to the requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
RCN Corporation
By:
/s/  Deborah M. Royster
NAME:
Deborah M. Royster
TITLE:
Senior Vice President, General   Counsel and Corporate Secretary
Date:
August 4, 2004
EXHIBIT INDEX
Exhibit
No.
99.1
RCN Corporation Press Release dated August 4, 2004.