RANKING · 2025 ESTIMATES · 66 SHOWN OF 66

Largest by population, South Dakota counties

The most populous South Dakota counties as of the 2025 population estimates. This list covers the 66 counties in South Dakota that qualify, ranked against each other statewide. The median across all 66 is 5,419.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Minnehaha County, SDSD212,691+43%

02Pennington County, SDSD116,792+32%

03Lincoln County, SDSD77,145+220%

04▲1Brookings County, SDSD37,635+33%

05▼1Brown County, SDSD37,561+6%

06Meade County, SDSD30,711+27%

07Codington County, SDSD29,562+14%

08Lawrence County, SDSD29,459+35%

09Yankton County, SDSD23,635+9%

10Davison County, SDSD20,069+7%

11Beadle County, SDSD19,624+15%

12Hughes County, SDSD17,570+7%

13Union County, SDSD17,402+38%

14Clay County, SDSD15,031+11%

15Oglala Lakota County, SDSD13,338–

16Lake County, SDSD10,993−3%

17▲1Butte County, SDSD10,856+19%

18▼1Roberts County, SDSD10,255+2%

19▲3Custer County, SDSD9,431+30%

20▲1Turner County, SDSD9,314+5%

21▼2Charles Mix County, SDSD9,303−1%

22▼2Todd County, SDSD8,863−2%

23Grant County, SDSD7,534−4%

24▲2Fall River County, SDSD7,4670%

25▼1Hutchinson County, SDSD7,413−8%

26▼1Bon Homme County, SDSD7,2440%

27▲2Hamlin County, SDSD6,900+25%

28Moody County, SDSD6,632+1%

29▼2Spink County, SDSD6,155−17%

30McCook County, SDSD5,964+2%

31Tripp County, SDSD5,708−11%

32Day County, SDSD5,484−12%

33▲2Dewey County, SDSD5,419−9%

34▲2Kingsbury County, SDSD5,284−9%

35▼1Brule County, SDSD5,278−2%

36▼3Walworth County, SDSD5,217−13%

37Marshall County, SDSD4,426−3%

38Deuel County, SDSD4,408−2%

39Gregory County, SDSD4,037−16%

40▲2Clark County, SDSD4,031−3%

41▼1Edmunds County, SDSD4,022−8%

42▼1Corson County, SDSD3,781−10%

43Lyman County, SDSD3,694−5%

44Hanson County, SDSD3,456+10%

45Bennett County, SDSD3,307−7%

46Hand County, SDSD3,121−17%

47Stanley County, SDSD3,018+9%

48Douglas County, SDSD2,888−16%

49Perkins County, SDSD2,853−15%

50▲1Aurora County, SDSD2,801−8%

51▼1Jackson County, SDSD2,666−9%

52▲1Ziebach County, SDSD2,389−5%

53▲2Sanborn County, SDSD2,388−11%

54▼2Potter County, SDSD2,377−12%

55▼1McPherson County, SDSD2,347−19%

56Miner County, SDSD2,281−21%

57Faulk County, SDSD2,178−18%

58▲1Mellette County, SDSD2,137+3%

59▼1Buffalo County, SDSD1,802−11%

60Haakon County, SDSD1,802−18%

61Jerauld County, SDSD1,654−28%

62Sully County, SDSD1,479−5%

63Campbell County, SDSD1,377−23%

64Harding County, SDSD1,331−2%

65Hyde County, SDSD1,191−29%

66Jones County, SDSD913−23%

SHOWING 1–66 OF 66

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES