RANKING · 2025 ESTIMATES · 66 SHOWN OF 66

Most densely populated, South Dakota counties

South Dakota counties ranked by residents per square mile (2025). This list covers the 66 counties in South Dakota that qualify, ranked against each other statewide.

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RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most population lost Most sparsely populated

RANKPLACESTATEPOPPOPULATION DENSITYVS –

01Minnehaha County, SDSD212,691264–

02Lincoln County, SDSD77,145134–

03Brookings County, SDSD37,63548–

04Davison County, SDSD20,06946–

05Yankton County, SDSD23,63545–

06Codington County, SDSD29,56243–

07Pennington County, SDSD116,79242–

08Union County, SDSD17,40238–

09Lawrence County, SDSD29,45937–

10Clay County, SDSD15,03136–

11Hughes County, SDSD17,57024–

12Brown County, SDSD37,56122–

13Lake County, SDSD10,99320–

14Beadle County, SDSD19,62416–

15Turner County, SDSD9,31415–

16Hamlin County, SDSD6,90014–

17Bon Homme County, SDSD7,24413–

18Moody County, SDSD6,63213–

19Grant County, SDSD7,53411–

20McCook County, SDSD5,96410–

21Roberts County, SDSD10,2559–

22Hutchinson County, SDSD7,4139–

23Meade County, SDSD30,7119–

24Charles Mix County, SDSD9,3038–

25Hanson County, SDSD3,4568–

26Walworth County, SDSD5,2177–

27Deuel County, SDSD4,4087–

28Douglas County, SDSD2,8887–

29Brule County, SDSD5,2786–

30Todd County, SDSD8,8636–

31Oglala Lakota County, SDSD13,3386–

32Kingsbury County, SDSD5,2846–

33Custer County, SDSD9,4316–

34Day County, SDSD5,4845–

35Marshall County, SDSD4,4265–

36Butte County, SDSD10,8565–

37Fall River County, SDSD7,4674–

38Clark County, SDSD4,0314–

39Sanborn County, SDSD2,3884–

40Spink County, SDSD6,1554–

41Miner County, SDSD2,2814–

42Gregory County, SDSD4,0374–

43Aurora County, SDSD2,8014–

44Buffalo County, SDSD1,8024–

45Edmunds County, SDSD4,0224–

46Tripp County, SDSD5,7084–

47Jerauld County, SDSD1,6543–

48Bennett County, SDSD3,3073–

49Potter County, SDSD2,3773–

50Dewey County, SDSD5,4192–

51Lyman County, SDSD3,6942–

52Faulk County, SDSD2,1782–

53Hand County, SDSD3,1212–

54Stanley County, SDSD3,0182–

55McPherson County, SDSD2,3472–

56Campbell County, SDSD1,3772–

57Mellette County, SDSD2,1372–

58Corson County, SDSD3,7812–

59Sully County, SDSD1,4791–

60Jackson County, SDSD2,6661–

61Hyde County, SDSD1,1911–

62Ziebach County, SDSD2,3891–

63Haakon County, SDSD1,8021–

64Perkins County, SDSD2,8531–

65Jones County, SDSD9131–

66Harding County, SDSD1,3310–

SHOWING 1–66 OF 66

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU POPULATION ESTIMATES