RANKING · 2010 CENSUS · 65 SHOWN OF 65

Youngest by median age, South Dakota counties · 2010

South Dakota counties with the youngest median age (2010 ACS). This list covers the 65 counties in South Dakota that qualify, ranked against each other statewide. The median across all 65 is 42.7.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Todd County, SDSD8,86324.0+11%

02Buffalo County, SDSD1,80225.0+7%

03Clay County, SDSD15,03125.00%

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 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS