RANKING · 2024 ACS · 66 SHOWN OF 66

Youngest by median age, South Dakota counties

South Dakota counties with the youngest median age (2023 ACS). This list covers the 66 counties in South Dakota that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDOldest by median age Most foreign-born residents Highest uninsured rate Most women Most men Highest disability rate

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Buffalo County, SDSD1,80222.8−3%

02Clay County, SDSD15,03124.9+0%

03Todd County, SDSD8,86325.5+18%

04Bennett County, SDSD3,30727.4−6%

05Dewey County, SDSD5,41927.7+5%

06Brookings County, SDSD37,63528.0+5%

07Oglala Lakota County, SDSD13,33828.2–

08Corson County, SDSD3,78129.9+6%

09Hamlin County, SDSD6,90031.8−16%

10Jones County, SDSD91333.9−18%

11Jackson County, SDSD2,66634.3+12%

12Lincoln County, SDSD77,14535.9+6%

13Charles Mix County, SDSD9,30336.0+1%

14Minnehaha County, SDSD212,69136.0+7%

15Lyman County, SDSD3,69436.1+5%

16Ziebach County, SDSD2,38936.7+54%

17Meade County, SDSD30,71137.3+12%

18Mellette County, SDSD2,13737.5+17%

19Beadle County, SDSD19,62437.6−6%

20Brown County, SDSD37,56137.8+2%

21Hanson County, SDSD3,45638.3+6%

22Roberts County, SDSD10,25538.5+4%

23Hughes County, SDSD17,57039.5+5%

24McCook County, SDSD5,96439.5+2%

25Davison County, SDSD20,06939.6+10%

26Pennington County, SDSD116,79240.1+15%

27Sanborn County, SDSD2,38840.1−2%

28Butte County, SDSD10,85640.2+6%

29Clark County, SDSD4,03140.3−3%

30Codington County, SDSD29,56240.4+14%

31Moody County, SDSD6,63240.8+10%

32Turner County, SDSD9,31441.2+2%

33Brule County, SDSD5,27841.5+12%

34Union County, SDSD17,40241.5+12%

35Aurora County, SDSD2,80141.7+3%

36Walworth County, SDSD5,21741.7−3%

37Deuel County, SDSD4,40841.8+2%

38Douglas County, SDSD2,88842.0+0%

39Bon Homme County, SDSD7,24442.1+4%

40Hutchinson County, SDSD7,41342.1−2%

41Kingsbury County, SDSD5,28442.1−1%

42Hand County, SDSD3,12142.5−3%

43Marshall County, SDSD4,42642.5+2%

44Yankton County, SDSD23,63542.5+15%

45Faulk County, SDSD2,17842.9+3%

46Lake County, SDSD10,99343.8+20%

47Edmunds County, SDSD4,02244.0+6%

48Perkins County, SDSD2,85344.0+2%

49Grant County, SDSD7,53444.5+10%

50Stanley County, SDSD3,01844.5+18%

51Gregory County, SDSD4,03744.7+1%

52Day County, SDSD5,48444.8+4%

53Lawrence County, SDSD29,45944.8+20%

54Tripp County, SDSD5,70845.0+14%

55Spink County, SDSD6,15545.5+14%

56Harding County, SDSD1,33146.3+23%

57Jerauld County, SDSD1,65446.9+1%

58Sully County, SDSD1,47946.9+17%

59Haakon County, SDSD1,80247.9+16%

60Miner County, SDSD2,28148.4+14%

61Potter County, SDSD2,37749.9+9%

62McPherson County, SDSD2,34750.0+5%

63Campbell County, SDSD1,37750.9+21%

64Hyde County, SDSD1,19153.7+27%

65Fall River County, SDSD7,46755.3+22%

66Custer County, SDSD9,43157.6+33%

SHOWING 1–66 OF 66

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES