The resident population of U.S is 309,321,666 as of July 1, 2010.
| Resident | 309,321,666 |
| Resident Plus Armed Forces Overseas | 309,741,279 |
| Civilian | 308,086,427 |
| Noninstitutionalized Civilian | 304,088,178 |
| Household | 301,287,808 |
All the data are sourced from US Census Bureau [48]. The definition of Civilian noninstitutional population: US Department of Labor.
The most populated state is California (37,319,502), and the least is Wyoming (564,487) as of July 1, 2010. The below table shows all states population in 2010 [1].
| State | Population |
| Alabama | 4,785,437 |
| Alaska | 713,910 |
| Arizona | 6,407,172 |
| Arkansas | 2,921,964 |
| California | 37,319,502 |
| Colorado | 5,047,349 |
| Connecticut | 3,579,114 |
| Delaware | 899,593 |
| District of Columbia | 605,226 |
| Florida | 18,845,537 |
| Georgia | 9,711,881 |
| Hawaii | 1,363,963 |
| Idaho | 1,570,746 |
| Illinois | 12,840,503 |
| Indiana | 6,490,432 |
| Iowa | 3,050,745 |
| Kansas | 2,858,190 |
| Kentucky | 4,348,181 |
| Louisiana | 4,544,532 |
| Maine | 1,327,629 |
| Maryland | 5,788,645 |
| Massachusetts | 6,566,307 |
| Michigan | 9,877,510 |
| Minnesota | 5,310,828 |
| Mississippi | 2,970,548 |
| Missouri | 5,995,974 |
| Montana | 990,697 |
| Nebraska | 1,829,542 |
| Nevada | 2,702,405 |
| New Hampshire | 1,316,762 |
| New Jersey | 8,799,446 |
| New Mexico | 2,064,552 |
| New York | 19,399,878 |
| North Carolina | 9,574,323 |
| North Dakota | 674,715 |
| Ohio | 11,539,336 |
| Oklahoma | 3,759,944 |
| Oregon | 3,837,491 |
| Pennsylvania | 12,711,160 |
| Rhode Island | 1,053,959 |
| South Carolina | 4,635,649 |
| South Dakota | 816,166 |
| Tennessee | 6,355,311 |
| Texas | 25,241,971 |
| Utah | 2,775,332 |
| Vermont | 625,879 |
| Virginia | 8,023,699 |
| Washington | 6,742,830 |
| West Virginia | 1,854,239 |
| Wisconsin | 5,690,475 |
| Wyoming | 564,487 |