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 Projections 
12.06.10
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 [...]
