# Lijst van county's in South Dakota

De Amerikaanse staat South Dakota is onderverdeeld in 66 county's.
| County | Inwoners 1 juli 2007 | Hoofdplaats | Inwoners 1 juli 2007 |
| Aurora | 2854 | Plankinton | 560 |
| Beadle | 15.669 | Huron | 10.902 |
| Bennett | 3441 | Martin | 1010 |
| Bon Homme | 7071 | Tyndall | 117 |
| Brookings | 29.241 | Brookings | 19.463 |
| Brown | 35.113 | Aberdeen | 24.410 |
| Brule | 5190 | Chamberlain | 2258 |
| Buffalo | 2111 | Gann Valley | --- |
| Butte | 9475 | Belle Fourche | 4909 |
| Campbell | 1397 | Mound City | 66 |
| Charles Mix | 8953 | Lake Andes | 761 |
| Clark | 3472 | Clark | 1073 |
| Clay | 13.364 | Vermillion | 10.251 |
| Codington | 26.356 | Watertown | 20.530 |
| Corson | 4205 | McIntosh | 209 |
| Custer | 7818 | Custer | 1902 |
| Davison | 19.020 | Mitchell | 14.832 |
| Day | 5667 | Webster | 1718 |
| Deuel | 4259 | Clear Lake | 1222 |
| Dewey | 6005 | Timber Lake | 426 |
| Douglas | 3018 | Armour | 671 |
| Edmunds | 4008 | Ipswich | 862 |
| Fall River | 7210 | Hot Springs | 4052 |
| Faulk | 2276 | Faulkton | 672 |
| Grant | 7159 | Milbank | 3237 |
| Gregory | 4110 | Burke | 576 |
| Haakon | 1845 | Philip | 741 |
| Hamlin | 5621 | Hayti | 351 |
| Hand | 3273 | Miller | 1341 |
| Hanson | 3621 | Alexandria | 653 |
| Harding | 1180 | Buffalo | 330 |
| Hughes | 16.880 | Pierre | 14.032 |
| Hutchinson | 7340 | Olivet | 64 |
| Hyde | 1465 | Highmore | 736 |
| Jackson | 2792 | Kadoka | 653 |
| Jerauld | 1993 | Wessington Springs | 853 |
| Jones | 1055 | Murdo | 542 |
| Kingsbury | 5394 | De Smet | 1055 |
| Lake | 11.372 | Madison | 6319 |
| Lawrence | 23.347 | Deadwood | 1293 |
| Lincoln | 37.765 | Canton | 4127 |
| Lyman | 3909 | Kennebec | 284 |
| Marshall | 4318 | Britton | 1264 |
| McCook | 5755 | Salem | 1345 |
| McPherson | 2496 | Leola | 390 |
| Meade | 23.999 | Sturgis | 5990 |
| Mellette | 2019 | White River | 563 |
| Miner | 2475 | Howard | 909 |
| Minnehaha | 175.272 | Sioux Falls | 151.505 |
| Moody | 6506 | Flandreau | 2263 |
| Oglala Lakota | 13.589 | Hot Springs | 4052 |
| Pennington | 96.280 | Rapid City | 63.997 |
| Perkins | 2917 | Bison | 328 |
| Potter | 2184 | Gettysburg | 1088 |
| Roberts | 9865 | Sisseton | 2457 |
| Sanborn | 2444 | Woonsocket | 642 |
| Spink | 6739 | Redfield | 2290 |
| Stanley | 2787 | Fort Pierre | 2068 |
| Sully | 1411 | Onida | 647 |
| Todd | 10.157 | Winner | 2805 |
| Tripp | 5806 | Winner | 2805 |
| Turner | 8379 | Parker | 980 |
| Union | 13.952 | Elk Point | 1888 |
| Walworth | 5262 | Selby | 660 |
| Yankton | 21.645 | Yankton | 13.643 |
| Ziebach | 2643 | Dupree | 452 |
* ↑ U.S. Census Bureau: Annual Estimates of the Population for Counties: April 1, 2000 to July 1, 2007
* ↑ U.S. Census Bureau: Population Estimates for All Places: 2000 to 2007
* 1 2 Oglala Lakota County en Todd County hebben geen hoofdplaats, de bestuurlijke taken worden uitgevoerd in de hoofdplaatsen van de naburige county's, respectievelijk Fall River County en Tripp County.
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