Nevada barely edged Arizona as the fastest growing state in 2005.

UNITED STATES POPULATION GROWTH
Change, 2004 to 2005
Geographic Area July 1, 2005 July 1, 2004 Number Percent
United States 296,410,404 293,656,842 2,753,562 0.9
South 107,505,413 105,994,495 1,510,918 1.4
West 68,291,122 67,386,585 904,537 1.3
Midwest 65,971,974 65,693,747 278,227 0.4
Northeast 54,641,895 54,582,015 59,880 0.1
Nevada 2,414,807 2,332,898 81,909 3.5
Arizona 5,939,292 5,739,879 199,413 3.5
Idaho 1,429,096 1,395,140 33,956 2.4
Florida 17,789,864 17,385,430 404,434 2.3
Utah 2,469,585 2,420,708 48,877 2.0
Georgia 9,072,576 8,918,129 154,447 1.7
Texas 22,859,968 22,471,549 388,419 1.7
North Carolina 8,683,242 8,540,468 142,774 1.7
Delaware 843,524 830,069 13,455 1.6
Oregon 3,641,056 3,591,363 49,693 1.4
Source: U.S. Census Bureau