| Annual Estimates of the Population for Counties of South Dakota: April 1, 2000 to July 1, 2006 | |||||||||
| Geographic Area | Population Estimates | April 1, 2000 | |||||||
| July 1, 2006 | July 1, 2005 | July 1, 2004 | July 1, 2003 | July 1, 2002 | July 1, 2001 | July 1, 2000 | Estimates Base | Census | |
| South Dakota | 781,919 | 774,883 | 770,188 | 763,913 | 760,291 | 758,106 | 755,793 | 754,844 | 754,844 |
| Aurora County | 2,905 | 2,891 | 2,930 | 2,923 | 2,913 | 2,987 | 3,063 | 3,058 | 3,058 |
| Beadle County | 15,643 | 15,860 | 16,021 | 16,217 | 16,553 | 16,796 | 16,980 | 17,023 | 17,023 |
| Bennett County | 3,543 | 3,561 | 3,547 | 3,521 | 3,539 | 3,535 | 3,576 | 3,574 | 3,574 |
| Bon Homme County | 7,281 | 7,061 | 7,098 | 7,136 | 7,141 | 7,200 | 7,252 | 7,260 | 7,260 |
| Brookings County | 28,195 | 27,769 | 28,056 | 28,205 | 28,247 | 28,154 | 28,265 | 28,220 | 28,220 |
| Brown County | 34,645 | 34,684 | 34,709 | 34,764 | 34,874 | 35,077 | 35,378 | 35,460 | 35,460 |
| Brule County | 5,167 | 5,150 | 5,165 | 5,189 | 5,179 | 5,241 | 5,352 | 5,364 | 5,364 |
| Buffalo County | 2,109 | 2,087 | 2,079 | 2,051 | 2,008 | 2,024 | 2,003 | 2,032 | 2,032 |
| Butte County | 9,374 | 9,347 | 9,244 | 9,166 | 9,034 | 9,121 | 9,114 | 9,094 | 9,094 |
| Campbell County | 1,494 | 1,549 | 1,601 | 1,658 | 1,714 | 1,755 | 1,781 | 1,782 | 1,782 |
| Charles Mix County | 9,224 | 9,221 | 9,088 | 9,144 | 9,207 | 9,227 | 9,348 | 9,350 | 9,350 |
| Clark County | 3,683 | 3,802 | 3,908 | 3,940 | 3,993 | 4,144 | 4,127 | 4,143 | 4,143 |
| Clay County | 12,867 | 12,953 | 13,012 | 13,209 | 13,255 | 13,465 | 13,483 | 13,537 | 13,537 |
| Codington County | 26,347 | 26,037 | 25,945 | 25,907 | 25,827 | 25,865 | 25,911 | 25,897 | 25,897 |
| Corson County | 4,288 | 4,327 | 4,364 | 4,308 | 4,267 | 4,192 | 4,209 | 4,176 | 4,181 |
| Custer County | 7,944 | 7,825 | 7,839 | 7,659 | 7,540 | 7,358 | 7,298 | 7,275 | 7,275 |
| Davison County | 19,035 | 18,863 | 18,904 | 18,754 | 18,732 | 18,730 | 18,724 | 18,741 | 18,741 |
| Day County | 5,778 | 5,791 | 5,838 | 5,889 | 6,056 | 6,111 | 6,248 | 6,267 | 6,267 |
| Deuel County | 4,301 | 4,304 | 4,273 | 4,345 | 4,439 | 4,480 | 4,504 | 4,498 | 4,498 |
| Dewey County | 6,112 | 6,137 | 6,109 | 6,154 | 6,048 | 6,047 | 5,987 | 5,972 | 5,972 |
| Douglas County | 3,168 | 3,269 | 3,305 | 3,318 | 3,344 | 3,433 | 3,441 | 3,458 | 3,458 |
| Edmunds County | 4,062 | 4,105 | 4,096 | 4,190 | 4,257 | 4,306 | 4,353 | 4,367 | 4,367 |
| Fall River County | 7,304 | 7,299 | 7,268 | 7,280 | 7,320 | 7,394 | 7,415 | 7,453 | 7,453 |
| Faulk County | 2,339 | 2,370 | 2,420 | 2,478 | 2,506 | 2,562 | 2,631 | 2,640 | 2,640 |
| Grant County | 7,278 | 7,376 | 7,522 | 7,641 | 7,650 | 7,709 | 7,834 | 7,852 | 7,847 |
| Gregory County | 4,268 | 4,314 | 4,360 | 4,449 | 4,514 | 4,625 | 4,763 | 4,792 | 4,792 |
| Haakon County | 1,864 | 1,915 | 1,973 | 2,028 | 2,070 | 2,125 | 2,174 | 2,196 | 2,196 |
| Hamlin County | 5,616 | 5,630 | 5,593 | 5,585 | 5,592 | 5,552 | 5,551 | 5,540 | 5,540 |
| Hand County | 3,323 | 3,320 | 3,372 | 3,525 | 3,576 | 3,652 | 3,714 | 3,741 | 3,741 |
| Hanson County | 3,690 | 3,720 | 3,689 | 3,463 | 3,373 | 3,300 | 3,155 | 3,139 | 3,139 |
| Harding County | 1,205 | 1,204 | 1,237 | 1,292 | 1,295 | 1,321 | 1,343 | 1,353 | 1,353 |
| Hughes County | 16,946 | 16,871 | 16,763 | 16,653 | 16,603 | 16,409 | 16,501 | 16,481 | 16,481 |
| Hutchinson County | 7,426 | 7,555 | 7,639 | 7,780 | 7,829 | 7,974 | 8,078 | 8,075 | 8,075 |
| Hyde County | 1,551 | 1,607 | 1,624 | 1,598 | 1,579 | 1,623 | 1,668 | 1,671 | 1,671 |
| Jackson County | 2,900 | 2,891 | 2,879 | 2,867 | 2,858 | 2,847 | 2,938 | 2,930 | 2,930 |
| Jerauld County | 2,071 | 2,112 | 2,116 | 2,172 | 2,227 | 2,262 | 2,282 | 2,295 | 2,295 |
| Jones County | 1,067 | 1,050 | 1,079 | 1,081 | 1,116 | 1,126 | 1,182 | 1,193 | 1,193 |
| Kingsbury County | 5,464 | 5,501 | 5,463 | 5,567 | 5,613 | 5,681 | 5,812 | 5,815 | 5,815 |
| Lake County | 11,170 | 11,053 | 10,938 | 11,013 | 11,126 | 11,240 | 11,249 | 11,276 | 11,276 |
| Lawrence County | 22,685 | 22,510 | 22,309 | 21,924 | 21,640 | 21,670 | 21,766 | 21,802 | 21,802 |
| Lincoln County | 35,239 | 33,394 | 31,552 | 29,224 | 27,744 | 26,175 | 24,550 | 24,147 | 24,131 |
| Lyman County | 3,929 | 3,930 | 3,943 | 3,954 | 3,922 | 3,931 | 3,910 | 3,895 | 3,895 |
| McCook County | 5,851 | 5,905 | 5,890 | 5,842 | 5,829 | 5,855 | 5,850 | 5,832 | 5,832 |
| McPherson County | 2,565 | 2,638 | 2,680 | 2,754 | 2,782 | 2,838 | 2,894 | 2,904 | 2,904 |
| Marshall County | 4,430 | 4,417 | 4,372 | 4,277 | 4,351 | 4,453 | 4,578 | 4,576 | 4,576 |
| Meade County | 24,425 | 24,551 | 24,642 | 24,430 | 24,487 | 24,248 | 24,230 | 24,245 | 24,253 |
| Mellette County | 2,099 | 2,095 | 2,066 | 2,115 | 2,052 | 2,093 | 2,087 | 2,083 | 2,083 |
| Miner County | 2,553 | 2,573 | 2,629 | 2,693 | 2,803 | 2,837 | 2,888 | 2,884 | 2,884 |
| Minnehaha County | 163,281 | 160,051 | 157,198 | 154,758 | 152,681 | 151,058 | 149,020 | 148,265 | 148,281 |
| Moody County | 6,644 | 6,619 | 6,571 | 6,512 | 6,544 | 6,617 | 6,584 | 6,595 | 6,595 |
| Pennington County | 94,338 | 93,357 | 92,817 | 91,344 | 90,809 | 89,976 | 88,771 | 88,573 | 88,565 |
| Perkins County | 3,025 | 3,047 | 3,110 | 3,205 | 3,280 | 3,290 | 3,344 | 3,368 | 3,363 |
| Potter County | 2,321 | 2,371 | 2,462 | 2,505 | 2,523 | 2,582 | 2,680 | 2,693 | 2,693 |
| Roberts County | 10,024 | 10,013 | 10,092 | 10,062 | 9,894 | 10,061 | 10,003 | 10,011 | 10,016 |
| Sanborn County | 2,517 | 2,535 | 2,619 | 2,613 | 2,575 | 2,582 | 2,673 | 2,675 | 2,675 |
| Shannon County | 13,824 | 13,552 | 13,333 | 13,260 | 13,051 | 12,771 | 12,545 | 12,466 | 12,466 |
| Spink County | 6,923 | 6,930 | 6,963 | 6,985 | 7,106 | 7,223 | 7,433 | 7,454 | 7,454 |
| Stanley County | 2,815 | 2,787 | 2,842 | 2,757 | 2,737 | 2,756 | 2,781 | 2,772 | 2,772 |
| Sully County | 1,435 | 1,432 | 1,425 | 1,450 | 1,495 | 1,535 | 1,552 | 1,556 | 1,556 |
| Todd County | 10,088 | 9,892 | 9,737 | 9,486 | 9,407 | 9,283 | 9,091 | 9,050 | 9,050 |
| Tripp County | 6,066 | 6,069 | 6,091 | 6,207 | 6,288 | 6,292 | 6,388 | 6,430 | 6,430 |
| Turner County | 8,540 | 8,532 | 8,605 | 8,622 | 8,618 | 8,776 | 8,859 | 8,849 | 8,849 |
| Union County | 13,745 | 13,434 | 13,256 | 13,073 | 12,837 | 12,685 | 12,595 | 12,584 | 12,584 |
| Walworth County | 5,425 | 5,474 | 5,520 | 5,541 | 5,691 | 5,799 | 5,937 | 5,974 | 5,974 |
| Yankton County | 21,779 | 21,753 | 21,757 | 21,645 | 21,549 | 21,522 | 21,611 | 21,652 | 21,652 |
| Ziebach County | 2,706 | 2,641 | 2,641 | 2,556 | 2,582 | 2,548 | 2,486 | 2,519 | 2,519 |
Source: Population Division, U.S. Census Bureau