The 2010 U.S. Population Is…
The Census Bureau today released five sets of population estimates for the nation as of April 1–but not from the soon-to-be-released 2010 Census count.
Population Trends 
12.06.10
09.01.10
New Unauthorized Immigration Estimates for the U.S.
The average annual inflow of unauthorized immigrants to the United States was nearly two-thirds smaller in the March 2007 to March 2009 period than it had been from March 2000 to March 2005.
05.11.10
How Many Undocumented Immigrants?
The Census Bureau does not ask U.S. residents for their immigration status when they are counted in the 2010 Census or other population surveys.
04.06.10
U.S. Birth Rate Decline Linked to Recession
There is a strong association between the magnitude of fertility change in 2008 across states and key economic indicators including changes in per capita income, housing prices and share of the working-age population that is employed across states.
01.26.10
How the Population Clock Works
The population clock on the All Things Census page is derived using national-level data from the U.S. Census Bureau, which produces estimates of the country’s total resident population and the components that are the building blocks of demographic change. Those components include births, deaths and net international migration, computed using data from the Census Bureau [...]
