The U.S. Census Bureau announced on Dec. 21, 2010, that the 2010 Census showed the resident population of the United States on April 1, 2010, was 308,745,538.
The resident population represented an increase of 9.7 percent over the 2000 U.S. resident population of 281,421,906. The U.S. resident population represents the total number of people in the 50 states and the District of Columbia.
The most populous state was California (37,253,956); the least populous, Wyoming (563,626). The state that gained the most numerically since the 2000 Census was Texas (up 4,293,741 to 25,145,561) and the state that gained the most as a percentage of its 2000 Census count was Nevada (up 35.1% to 2,700,551).
Regionally, the South and the West picked up the bulk of the population increase, 14,318,924 and 8,747,621, respectively. But the Northeast and the Midwest also grew: 1,722,862 and 2,534,225.
Additionally, Puerto Rico's resident population was 3,725,789, a 2.2 percent decrease over the number counted a decade earlier.
Commerce Secretary Gary Locke delivered the apportionment counts to …