text: It is home to nearly 4,000 pteridophyte and spermatophyte plant species.Indigenous animal species in the state include 62 mammal species, 93 reptile species, 73 amphibian species, roughly 307 native freshwater fish species, and 420 bird species that spend at least part of their year within the state.Invertebrates include 97 crayfish species and 383 mollusk species.113 of these mollusk species have never been collected outside the state.Census-designated and metropolitan areas Cities Demographics According to the 2020 United States census the population of Alabama was 5,024,279 on April 1, 2020, which represents an increase of 244,543 or 5.12%, since the 2010 census.This includes a natural increase since the last census of 121,054 (502,457 births minus 381,403 deaths) and an increase due to net migration of 104,991 into the state.Immigration from outside the U.S.resulted in a net increase of 31,180 people, and migration within the country produced a net gain of 73,811 people.The state had 108,000 foreign-born (2.4% of the state population), of which an estimated 22.2% were undocumented (24,000).Alabama has the 5th highest African American population among US states at 25.8% as of 2020.The center of population of Alabama is located in Chilton County, outside the town of Jemison.According to HUD's 2022 Annual Homeless Assessment Report, there were an estimated 3,752 homeless people in Alabama.Ancestry Those citing "American" ancestry in Alabama are of overwhelmingly English extraction, however most English Americans identify simply as having American ancestry because their roots have been in North America for so long, in many cases since the early 1600s.Demographers estimate that a minimum of 20–23% of people in Alabama are of predominantly English ancestry and state that the figure is probably much higher.