Population Characteristics - Population (2010 - 2012) To resort data: click column headings. To download data: click here. Name Change (%) Rank Change (%) Population 2010 Population 2012 Change (Number) North Dakota 1 4.0% 672,591 699,628 27,037 Texas 2 3.6% 25,145,561 26,059,203 913,642 Utah 3 3.3% 2,763,885 2,855,287 91,402 Colorado 4 3.1% 5,029,196 5,187,582 158,386 Alaska 5 3.0% 710,231 731,449 21,218 Florida 6 2.7% 18,801,310 19,317,568 516,258 Washington 7 2.6% 6,724,540 6,897,012 172,472 Arizona 8 2.5% 6,392,017 6,553,255 161,238 Georgia 9 2.4% 9,687,653 9,919,945 232,292 South Dakota 10 2.4% 814,180 833,354 19,174 Hawaii 11 2.4% 1,360,301 1,392,313 32,012 Virginia 12 2.3% 8,001,024 8,185,867 184,843 North Carolina 13 2.3% 9,535,483 9,752,073 216,590 Wyoming 14 2.3% 563,626 576,412 12,786 Nevada 15 2.2% 2,700,551 2,758,931 58,380 Delaware 16 2.1% 897,934 917,092 19,158 South Carolina 17 2.1% 4,625,364 4,723,723 98,359 California 18 2.1% 37,253,956 38,041,430 787,474 Maryland 19 1.9% 5,773,552 5,884,563 111,011 Idaho 20 1.8% 1,567,582 1,595,728 28,146 Oregon 21 1.8% 3,831,074 3,899,353 68,279 Tennessee 22 1.7% 6,346,105 6,456,243 110,138 Oklahoma 23 1.7% 3,751,351 3,814,820 63,469 Nebraska 24 1.6% 1,826,341 1,855,525 29,184 Montana 25 1.6% 989,415 1,005,141 15,726 Louisiana 26 1.5% 4,533,372 4,601,893 68,521 Massachusetts 27 1.5% 6,547,629 6,646,144 98,515 Minnesota 28 1.4% 5,303,925 5,379,139 75,214 New Mexico 29 1.3% 2,059,179 2,085,538 26,359 Kansas 30 1.1% 2,853,118 2,885,905 32,787 Arkansas 31 1.1% 2,915,918 2,949,131 33,213 New York 32 1.0% 19,378,102 19,570,261 192,159 Kentucky 33 0.9% 4,339,367 4,380,415 41,048 Iowa 34 0.9% 3,046,355 3,074,186 27,831 Alabama 35 0.9% 4,779,736 4,822,023 42,287 New Jersey 36 0.8% 8,791,894 8,864,590 72,696 Indiana 37 0.8% 6,483,802 6,537,334 53,532 Wisconsin 38 0.7% 5,686,986 5,726,398 39,412 Mississippi 39 0.6% 2,967,297 2,984,926 17,629 Missouri 40 0.6% 5,988,927 6,021,988 33,061 Pennsylvania 41 0.5% 12,702,379 12,763,536 61,157 Connecticut 42 0.5% 3,574,097 3,590,347 16,250 Illinois 43 0.3% 12,830,632 12,875,255 44,623 New Hampshire 44 0.3% 1,316,470 1,320,718 4,248 West Virginia 45 0.1% 1,852,994 1,855,413 2,419 Ohio 46 0.1% 11,536,504 11,544,225 7,721 Maine 47 0.1% 1,328,361 1,329,192 831 Vermont 48 0.0% 625,741 626,011 270 Michigan 49 0.0% 9,883,640 9,883,360 -280 Rhode Island 50 -0.2% 1,052,567 1,050,292 -2,275 Source: 1970 & 1980: U.S. Bureau of the Census, County Population Census Counts, (http://www.census.gov/population/www/censusdata/cencounts.html); 2001-2009, 2011-2012: U.S. Bureau of the Census, Population Estimates Program, (http://www.census.gov/popest/); 1990, 2000, 2010: U.S. Bureau of the Census, American Factfinder, (http://factfinder2.census.gov/); DATE LAST UPDATED: April 1, 2013.