All counties in South Dakota
| County Name | Population | State | Rank |
|---|
| Minnehaha County | 169,468 | South Dakota | 1 |
| Pennington County | 100,948 | South Dakota | 2 |
| Lincoln County | 44,828 | South Dakota | 3 |
| Brown County | 36,531 | South Dakota | 4 |
| Brookings County | 31,965 | South Dakota | 5 |
| Codington County | 27,227 | South Dakota | 6 |
| Meade County | 25,434 | South Dakota | 7 |
| Lawrence County | 24,097 | South Dakota | 8 |
| Yankton County | 22,438 | South Dakota | 9 |
| Davison County | 19,504 | South Dakota | 10 |
| Beadle County | 17,398 | South Dakota | 11 |
| Hughes County | 17,022 | South Dakota | 12 |
| Union County | 14,399 | South Dakota | 13 |
| Clay County | 13,864 | South Dakota | 14 |
| Shannon County | 13,586 | South Dakota | 15 |
| Lake County | 11,200 | South Dakota | 16 |
| Roberts County | 10,149 | South Dakota | 17 |
| Butte County | 10,110 | South Dakota | 18 |
| Todd County | 9,612 | South Dakota | 19 |
| Charles Mix County | 9,129 | South Dakota | 20 |
| Turner County | 8,347 | South Dakota | 21 |
| Custer County | 8,216 | South Dakota | 22 |
| Grant County | 7,356 | South Dakota | 23 |
| Hutchinson County | 7,343 | South Dakota | 24 |
| Fall River County | 7,094 | South Dakota | 25 |
| Bon Homme County | 7,070 | South Dakota | 26 |
| Moody County | 6,486 | South Dakota | 27 |
| Spink County | 6,415 | South Dakota | 28 |
| Hamlin County | 5,903 | South Dakota | 29 |
| Day County | 5,710 | South Dakota | 30 |
| Tripp County | 5,644 | South Dakota | 31 |
| Mccook County | 5,618 | South Dakota | 32 |
| Walworth County | 5,438 | South Dakota | 33 |
| Dewey County | 5,301 | South Dakota | 34 |
| Brule County | 5,255 | South Dakota | 35 |
| Kingsbury County | 5,148 | South Dakota | 36 |
| Marshall County | 4,656 | South Dakota | 37 |
| Deuel County | 4,364 | South Dakota | 38 |
| Gregory County | 4,271 | South Dakota | 39 |
| Edmunds County | 4,071 | South Dakota | 40 |
| Corson County | 4,050 | South Dakota | 41 |
| Lyman County | 3,755 | South Dakota | 42 |
| Clark County | 3,691 | South Dakota | 43 |
| Bennett County | 3,431 | South Dakota | 44 |
| Hand County | 3,431 | South Dakota | 45 |
| Hanson County | 3,331 | South Dakota | 46 |
| Jackson County | 3,031 | South Dakota | 47 |
| Douglas County | 3,002 | South Dakota | 48 |
| Perkins County | 2,982 | South Dakota | 49 |
| Stanley County | 2,966 | South Dakota | 50 |
| Ziebach County | 2,801 | South Dakota | 51 |
| Aurora County | 2,710 | South Dakota | 52 |
| Mcpherson County | 2,459 | South Dakota | 53 |
| Miner County | 2,389 | South Dakota | 54 |
| Faulk County | 2,364 | South Dakota | 55 |
| Sanborn County | 2,355 | South Dakota | 56 |
| Potter County | 2,329 | South Dakota | 57 |
| Jerauld County | 2,071 | South Dakota | 58 |
| Mellette County | 2,048 | South Dakota | 59 |
| Haakon County | 1,937 | South Dakota | 60 |
| Buffalo County | 1,912 | South Dakota | 61 |
| Campbell County | 1,466 | South Dakota | 62 |
| Hyde County | 1,420 | South Dakota | 63 |
| Sully County | 1,373 | South Dakota | 64 |
| Harding County | 1,255 | South Dakota | 65 |
| Jones County | 1,006 | South Dakota | 66 |