RANKING · 2010 CENSUS · 65 SHOWN OF 65

Youngest by median age, South Dakota counties · 2010

South Dakota counties with the youngest median age (2023 ACS). This list covers the 65 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

01Todd County, SDSD8,86324.0+11%

02Buffalo County, SDSD1,80225.0+7%

03Clay County, SDSD15,03125.0+0%

04Ziebach County, SDSD2,38925.4+7%

05Brookings County, SDSD37,63526.3−1%

06Bennett County, SDSD3,30728.7−2%

07Corson County, SDSD3,78129.7+5%

08Dewey County, SDSD5,41930.0+13%

09Jackson County, SDSD2,66631.5+3%

10Lincoln County, SDSD77,14532.8−4%

11Mellette County, SDSD2,13734.2+7%

12Minnehaha County, SDSD212,69134.5+3%

13Hanson County, SDSD3,45635.5−1%

14Meade County, SDSD30,71135.9+7%

15Lyman County, SDSD3,69436.1+5%

16Hamlin County, SDSD6,90036.8−3%

17Pennington County, SDSD116,79236.8+5%

18Codington County, SDSD29,56237.7+7%

19Davison County, SDSD20,06937.8+5%

20Charles Mix County, SDSD9,30338.2+7%

21Brown County, SDSD37,56138.6+4%

22Roberts County, SDSD10,25539.5+6%

23Hughes County, SDSD17,57039.8+6%

24Lake County, SDSD10,99339.9+9%

25Union County, SDSD17,40240.2+9%

26Moody County, SDSD6,63240.5+9%

27Lawrence County, SDSD29,45941.0+10%

28Butte County, SDSD10,85641.1+8%

29Beadle County, SDSD19,62441.2+3%

30Brule County, SDSD5,27841.3+12%

31Yankton County, SDSD23,63541.3+12%

32Stanley County, SDSD3,01841.9+11%

33McCook County, SDSD5,96442.7+11%

34Bon Homme County, SDSD7,24443.1+7%

35Aurora County, SDSD2,80143.2+6%

36Marshall County, SDSD4,42643.2+4%

37Harding County, SDSD1,33143.3+15%

38Turner County, SDSD9,31443.7+8%

39Deuel County, SDSD4,40843.9+8%

40Spink County, SDSD6,15544.4+11%

41Grant County, SDSD7,53445.1+12%

42Tripp County, SDSD5,70845.3+15%

43Clark County, SDSD4,03145.7+10%

44Edmunds County, SDSD4,02245.7+10%

45Hyde County, SDSD1,19146.4+10%

46Miner County, SDSD2,28146.4+9%

47Sully County, SDSD1,47946.6+17%

48Hutchinson County, SDSD7,41346.8+9%

49Faulk County, SDSD2,17846.9+13%

50Jones County, SDSD91346.9+14%

51Kingsbury County, SDSD5,28447.1+10%

52Sanborn County, SDSD2,38847.1+15%

53Walworth County, SDSD5,21747.2+10%

54Day County, SDSD5,48447.9+12%

55Gregory County, SDSD4,03748.2+9%

56Hand County, SDSD3,12148.2+11%

57Douglas County, SDSD2,88848.3+16%

58Perkins County, SDSD2,85348.5+13%

59Jerauld County, SDSD1,65448.6+5%

60Haakon County, SDSD1,80248.8+18%

61Campbell County, SDSD1,37750.1+20%

62Custer County, SDSD9,43150.3+16%

63Fall River County, SDSD7,46750.5+11%

64Potter County, SDSD2,37750.6+10%

65McPherson County, SDSD2,34750.8+7%

SHOWING 1–65 OF 65

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