South Dakota
People per square mile, 1990:
People per square mile, 2000:
Historic & Projected Growth
1790 to 2030
| Year | Population | Year | Population | Year | Population | ||
| 1790 | 0 | 1880 | 98,268 | 1970 | 666,257 | ||
| 1800 | 0 | 1890 | 348,600 | 1980 | 690,768 | ||
| 1810 | 0 | 1900 | 401,570 | 1990 | 696,004 | ||
| 1820 | 0 | 1910 | 583,888 | 2000 | 754,844 | ||
| 1830 | 0 | 1920 | 636,547 | 2010 | 786,399 | ||
| 1840 | 0 | 1930 | 692,849 | 2020 | 801,939 | ||
| 1850 | 0 | 1940 | 642,961 | 2030 | 800,462 | ||
| 1860 | 4,837 | 1950 | 652,740 | ||||
| 1870 | 11,776 | 1960 | 680,514 |
Population By County
| Census 2000 Population | Change | Percent Change | |
| SOUTH DAKOTA | 754,844 | 58,840 | 8.5 |
| Aurora County | 3,058 | -77 | -2.5 |
| Beadle County | 17,023 | -1,230 | -6.7 |
| Bennett County | 3,574 | 368 | 11.5 |
| Bon Homme County | 7,260 | 171 | 2.4 |
| Brookings County | 28,220 | 3,013 | 12.0 |
| Brown County | 35,460 | -120 | -0.3 |
| Brule County | 5,364 | -121 | -2.2 |
| Buffalo County | 2,032 | 273 | 15.5 |
| Butte County | 9,094 | 1,180 | 14.9 |
| Campbell County | 1,782 | -183 | -9.3 |
| Charles Mix County | 9,350 | 219 | 2.4 |
| Clark County | 4,143 | -260 | -5.9 |
| Clay County | 13,537 | 351 | 2.7 |
| Codington County | 25,897 | 3,199 | 14.1 |
| Corson County | 4,181 | -14 | -0.3 |
| Custer County | 7,275 | 1,096 | 17.7 |
| Davison County | 18,741 | 1,238 | 7.1 |
| Day County | 6,267 | -711 | -10.2 |
| Deuel County | 4,498 | -24 | -0.5 |
| Dewey County | 5,972 | 449 | 8.1 |
| Douglas County | 3,458 | -288 | -7.7 |
| Edmunds County | 4,367 | 11 | 0.3 |
| Fall River County | 7,453 | 100 | 1.4 |
| Faulk County | 2,640 | -104 | -3.8 |
| Grant County | 7,847 | -525 | -6.3 |
| Gregory County | 4,792 | -567 | -10.6 |
| Haakon County | 2,196 | -428 | -16.3 |
| Hamlin County | 5,540 | 566 | 11.4 |
| Hand County | 3,741 | -531 | -12.4 |
| Hanson County | 3,139 | 145 | 4.8 |
| Harding County | 1,353 | -316 | -18.9 |
| Hughes County | 16,481 | 1,664 | 11.2 |
| Hutchinson County | 8,075 | -187 | -2.3 |
| Hyde County | 1,671 | -25 | -1.5 |
| Jackson County | 2,930 | 119 | 4.2 |
| Jerauld County | 2,295 | -130 | -5.4 |
| Jones County | 1,193 | -131 | -9.9 |
| Kingsbury County | 5,815 | -110 | -1.9 |
| Lake County | 11,276 | 726 | 6.9 |
| Lawrence County | 21,802 | 1,147 | 5.6 |
| Lincoln County | 24,131 | 8,704 | 56.4 |
| Lyman County | 3,895 | 257 | 7.1 |
| McCook County | 5,832 | 144 | 2.5 |
| McPherson County | 2,904 | -324 | -10.0 |
| Marshall County | 4,576 | -268 | -5.5 |
| Meade County | 24,253 | 2,375 | 10.9 |
| Mellette County | 2,083 | -54 | -2.5 |
| Miner County | 2,884 | -388 | -11.9 |
| Minnehaha County | 148,281 | 24,472 | 19.8 |
| Moody County | 6,595 | 88 | 1.4 |
| Pennington County | 88,565 | 7,222 | 8.9 |
| Perkins County | 3,363 | -569 | -14.5 |
| Potter County | 2,693 | -497 | -15.6 |
| Roberts County | 10,016 | 102 | 1.0 |
| Sanborn County | 2,675 | -158 | -5.6 |
| Shannon County | 12,466 | 2,564 | 25.9 |
| Spink County | 7,454 | -527 | -6.6 |
| Stanley County | 2,772 | 319 | 13.0 |
| Sully County | 1,556 | -33 | -2.1 |
| Todd County | 9,050 | 698 | 8.4 |
| Tripp County | 6,430 | -494 | -7.1 |
| Turner County | 8,849 | 273 | 3.2 |
| Union County | 12,584 | 2,395 | 23.5 |
| Walworth County | 5,974 | -113 | -1.9 |
| Yankton County | 21,652 | 2,400 | 12.5 |
| Ziebach County | 2,519 | 299 | 13.5 |
SOURCE: U.S. Bureau of the Census
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