Population Characteristics - Population (2010 - 2019) To resort data: click column headings. To download data: click here. Name Change (%) Rank Change (%) Population 2010 Population 2019 Change (Number) Utah 1 16.0% 2,763,885 3,205,958 442,073 Texas 2 15.3% 25,145,561 28,995,881 3,850,320 Colorado 3 14.5% 5,029,196 5,758,736 729,540 Florida 4 14.2% 18,801,310 21,477,737 2,676,427 Nevada 5 14.1% 2,700,551 3,080,156 379,605 Idaho 6 14.0% 1,567,582 1,787,065 219,483 Arizona 7 13.9% 6,392,017 7,278,717 886,700 North Dakota 8 13.3% 672,591 762,062 89,471 Washington 9 13.2% 6,724,540 7,614,893 890,353 South Carolina 10 11.3% 4,625,364 5,148,714 523,350 Oregon 11 10.1% 3,831,074 4,217,737 386,663 North Carolina 12 10.0% 9,535,483 10,488,084 952,601 Georgia 13 9.6% 9,687,653 10,617,423 929,770 South Dakota 14 8.7% 814,180 884,659 70,479 Delaware 15 8.4% 897,934 973,764 75,830 Montana 16 8.0% 989,415 1,068,778 79,363 Tennessee 17 7.6% 6,346,105 6,829,174 483,069 Virginia 18 6.7% 8,001,024 8,535,519 534,495 Minnesota 19 6.3% 5,303,925 5,639,632 335,707 California 20 6.1% 37,253,956 39,512,223 2,258,267 Nebraska 21 5.9% 1,826,341 1,934,408 108,067 Oklahoma 22 5.5% 3,751,351 3,956,971 205,620 Massachusetts 23 5.3% 6,547,629 6,892,503 344,874 Maryland 24 4.7% 5,773,552 6,045,680 272,128 Hawaii 25 4.1% 1,360,301 1,415,872 55,571 Indiana 26 3.8% 6,483,802 6,732,219 248,417 Iowa 27 3.6% 3,046,355 3,155,070 108,715 Arkansas 28 3.5% 2,915,918 3,017,804 101,886 New Hampshire 29 3.3% 1,316,470 1,359,711 43,241 Alaska 30 3.0% 710,231 731,545 21,314 Kentucky 31 3.0% 4,339,367 4,467,673 128,306 Wyoming 32 2.7% 563,626 578,759 15,133 Alabama 33 2.6% 4,779,736 4,903,185 123,449 Louisiana 34 2.5% 4,533,372 4,648,794 115,422 Missouri 35 2.5% 5,988,927 6,137,428 148,501 Wisconsin 36 2.4% 5,686,986 5,822,434 135,448 Kansas 37 2.1% 2,853,118 2,913,314 60,196 New Mexico 38 1.8% 2,059,179 2,096,829 37,650 Ohio 39 1.3% 11,536,504 11,689,100 152,596 Maine 40 1.2% 1,328,361 1,344,212 15,851 Michigan 41 1.0% 9,883,640 9,986,857 103,217 New Jersey 42 1.0% 8,791,894 8,882,190 90,296 Pennsylvania 43 0.8% 12,702,379 12,801,989 99,610 Rhode Island 44 0.6% 1,052,567 1,059,361 6,794 New York 45 0.4% 19,378,102 19,453,561 75,459 Mississippi 46 0.3% 2,967,297 2,976,149 8,852 Connecticut 47 -0.2% 3,574,097 3,565,287 -8,810 Vermont 48 -0.3% 625,741 623,989 -1,752 Illinois 49 -1.2% 12,830,632 12,671,821 -158,811 West Virginia 50 -3.3% 1,852,994 1,792,147 -60,847 Source: 1970 & 1980: U.S. Bureau of the Census, County Population Census Counts, (http://www.census.gov/population/www/censusdata/cencounts.html); 2001-2009, 2011-2019: U.S. Bureau of the Census, Population Estimates Program, (http://www.census.gov/popest/); 1990, 2000, 2010: U.S. Bureau of the Census, Explore Census Data, (https://data.census.gov/cedsci/); DATE LAST UPDATED: March 27, 2020.