Population Characteristics - Population (2010 - 2018) To resort data: click column headings. To download data: click here. Name Change (%) Rank Change (%) Population 2010 Population 2018 Change (Number) Utah 1 14.4% 2,763,885 3,161,105 397,220 Texas 2 14.1% 25,145,561 28,701,845 3,556,284 Florida 3 13.3% 18,801,310 21,299,325 2,498,015 Colorado 4 13.2% 5,029,196 5,695,564 666,368 North Dakota 5 13.0% 672,591 760,077 87,486 Nevada 6 12.4% 2,700,551 3,034,392 333,841 Arizona 7 12.2% 6,392,017 7,171,646 779,629 Washington 8 12.1% 6,724,540 7,535,591 811,051 Idaho 9 11.9% 1,567,582 1,754,208 186,626 South Carolina 10 9.9% 4,625,364 5,084,127 458,763 Oregon 11 9.4% 3,831,074 4,190,713 359,639 North Carolina 12 8.9% 9,535,483 10,383,620 848,137 Georgia 13 8.6% 9,687,653 10,519,475 831,822 South Dakota 14 8.4% 814,180 882,235 68,055 Delaware 15 7.7% 897,934 967,171 69,237 Montana 16 7.4% 989,415 1,062,305 72,890 Tennessee 17 6.7% 6,346,105 6,770,010 423,905 Virginia 18 6.5% 8,001,024 8,517,685 516,661 California 19 6.2% 37,253,956 39,557,045 2,303,089 Minnesota 20 5.8% 5,303,925 5,611,179 307,254 Nebraska 21 5.6% 1,826,341 1,929,268 102,927 Massachusetts 22 5.4% 6,547,629 6,902,149 354,520 Oklahoma 23 5.1% 3,751,351 3,943,079 191,728 Maryland 24 4.7% 5,773,552 6,042,718 269,166 Hawaii 25 4.4% 1,360,301 1,420,491 60,190 Alaska 26 3.8% 710,231 737,438 27,207 Iowa 27 3.6% 3,046,355 3,156,145 109,790 Arkansas 28 3.4% 2,915,918 3,013,825 97,907 Indiana 29 3.2% 6,483,802 6,691,878 208,076 New Hampshire 30 3.0% 1,316,470 1,356,458 39,988 Kentucky 31 3.0% 4,339,367 4,468,402 129,035 Louisiana 32 2.8% 4,533,372 4,659,978 126,606 Wyoming 33 2.5% 563,626 577,737 14,111 Missouri 34 2.3% 5,988,927 6,126,452 137,525 Alabama 35 2.3% 4,779,736 4,887,871 108,135 Wisconsin 36 2.2% 5,686,986 5,813,568 126,582 Kansas 37 2.0% 2,853,118 2,911,505 58,387 New Mexico 38 1.8% 2,059,179 2,095,428 36,249 New Jersey 39 1.3% 8,791,894 8,908,520 116,626 Ohio 40 1.3% 11,536,504 11,689,442 152,938 Michigan 41 1.1% 9,883,640 9,995,915 112,275 New York 42 0.8% 19,378,102 19,542,209 164,107 Pennsylvania 43 0.8% 12,702,379 12,807,060 104,681 Maine 44 0.8% 1,328,361 1,338,404 10,043 Mississippi 45 0.6% 2,967,297 2,986,530 19,233 Rhode Island 46 0.5% 1,052,567 1,057,315 4,748 Vermont 47 0.1% 625,741 626,299 558 Connecticut 48 0.0% 3,574,097 3,572,665 -1,432 Illinois 49 -0.7% 12,830,632 12,741,080 -89,552 West Virginia 50 -2.5% 1,852,994 1,805,832 -47,162 Source: 1970 & 1980: U.S. Bureau of the Census, County Population Census Counts, (http://www.census.gov/population/www/censusdata/cencounts.html); 2001-2009, 2011-2018: 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: June 27, 2019.