Population Characteristics - Population (2010 - 2021) To resort data: click column headings. To download data: click here. Name Change (%) Rank Change (%) Population 2010 Population 2021 Change (Number) Idaho 1 21.3% 1,567,582 1,900,923 333,341 Utah 2 20.8% 2,763,885 3,337,975 574,090 Texas 3 17.4% 25,145,561 29,527,941 4,382,380 Nevada 4 16.4% 2,700,551 3,143,991 443,440 Florida 5 15.8% 18,801,310 21,781,128 2,979,818 Colorado 6 15.6% 5,029,196 5,812,069 782,873 North Dakota 7 15.2% 672,591 774,948 102,357 Washington 8 15.1% 6,724,540 7,738,692 1,014,152 Arizona 9 13.8% 6,392,017 7,276,316 884,299 South Carolina 10 12.2% 4,625,364 5,190,705 565,341 Delaware 11 11.7% 897,934 1,003,384 105,450 Montana 12 11.6% 989,415 1,104,271 114,856 Georgia 13 11.5% 9,687,653 10,799,566 1,111,913 Oregon 14 10.8% 3,831,074 4,246,155 415,081 North Carolina 15 10.7% 9,535,483 10,551,162 1,015,679 South Dakota 16 10.0% 814,180 895,376 81,196 Tennessee 17 9.9% 6,346,105 6,975,218 629,113 Virginia 18 8.0% 8,001,024 8,642,274 641,250 Minnesota 19 7.6% 5,303,925 5,707,390 403,465 Nebraska 20 7.5% 1,826,341 1,963,692 137,351 Maryland 21 6.8% 5,773,552 6,165,129 391,577 Massachusetts 22 6.7% 6,547,629 6,984,723 437,094 Oklahoma 23 6.3% 3,751,351 3,986,639 235,288 Hawaii 24 6.0% 1,360,301 1,441,553 81,252 New Hampshire 25 5.5% 1,316,470 1,388,992 72,522 Alabama 26 5.4% 4,779,736 5,039,877 260,141 New Jersey 27 5.4% 8,791,894 9,267,130 475,236 California 28 5.3% 37,253,956 39,237,836 1,983,880 Indiana 29 5.0% 6,483,802 6,805,985 322,183 Iowa 30 4.8% 3,046,355 3,193,079 146,724 Rhode Island 31 4.1% 1,052,567 1,095,610 43,043 Kentucky 32 3.9% 4,339,367 4,509,394 170,027 Arkansas 33 3.8% 2,915,918 3,025,891 109,973 Wisconsin 34 3.7% 5,686,986 5,895,908 208,922 Maine 35 3.3% 1,328,361 1,372,247 43,886 Vermont 36 3.2% 625,741 645,570 19,829 Alaska 37 3.2% 710,231 732,673 22,442 Missouri 38 3.0% 5,988,927 6,168,187 179,260 Kansas 39 2.9% 2,853,118 2,934,582 81,464 New Mexico 40 2.8% 2,059,179 2,115,877 56,698 Wyoming 41 2.7% 563,626 578,803 15,177 New York 42 2.4% 19,378,102 19,835,913 457,811 Ohio 43 2.1% 11,536,504 11,780,017 243,513 Pennsylvania 44 2.1% 12,702,379 12,964,056 261,677 Louisiana 45 2.0% 4,533,372 4,624,047 90,675 Michigan 46 1.7% 9,883,640 10,050,811 167,171 Connecticut 47 0.9% 3,574,097 3,605,597 31,500 Mississippi 48 -0.6% 2,967,297 2,949,965 -17,332 Illinois 49 -1.2% 12,830,632 12,671,469 -159,163 West Virginia 50 -3.8% 1,852,994 1,782,959 -70,035 Source: 1970 & 1980: U.S. Bureau of the Census, County Population Census Counts, (https://www.census.gov/programs-surveys/decennial-census/decade/decennial-publications.1970.html); 2001-2009, 2011-2021: 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 28, 2022.