RANKING · 2000 CENSUS · 65 SHOWN OF 65

Youngest by median age, South Dakota counties · 2000

South Dakota counties with the youngest median age (2000 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

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 1990

01Todd County, SDSD8,86321.7+5%

02Buffalo County, SDSD1,80223.4+5%

03Ziebach County, SDSD2,38923.8−4%

04Clay County, SDSD15,03124.9+4%

05Dewey County, SDSD5,41926.5+2%

06Brookings County, SDSD37,63526.6+1%

07Corson County, SDSD3,78128.3−1%

08Bennett County, SDSD3,30729.2−2%

09Jackson County, SDSD2,66630.6+3%

10Mellette County, SDSD2,13732.1+5%

11Meade County, SDSD30,71133.4+11%

12Minnehaha County, SDSD212,69133.5+6%

13Lincoln County, SDSD77,14534.0+2%

14Lyman County, SDSD3,69434.5+10%

15Pennington County, SDSD116,79235.0+16%

16Codington County, SDSD29,56235.3+7%

17Charles Mix County, SDSD9,30335.7+6%

18Davison County, SDSD20,06936.0+7%

19Hanson County, SDSD3,45636.0−2%

20Lake County, SDSD10,99336.5+8%

21Brule County, SDSD5,27836.9+12%

22Union County, SDSD17,40236.9+5%

23Moody County, SDSD6,63237.0+8%

24Yankton County, SDSD23,63537.0+10%

25Roberts County, SDSD10,25537.1+5%

26Brown County, SDSD37,56137.2+12%

27Lawrence County, SDSD29,45937.2+14%

28Hughes County, SDSD17,57037.5+13%

29Harding County, SDSD1,33137.6+16%

30Stanley County, SDSD3,01837.6+15%

31Hamlin County, SDSD6,90038.0+1%

32Butte County, SDSD10,85638.0+10%

33McCook County, SDSD5,96438.6+1%

34Tripp County, SDSD5,70839.5+15%

35Spink County, SDSD6,15539.9+11%

36Sully County, SDSD1,47940.0+13%

37Beadle County, SDSD19,62440.1+13%

38Bon Homme County, SDSD7,24440.3+8%

39Grant County, SDSD7,53440.3+16%

40Turner County, SDSD9,31440.5+3%

41Aurora County, SDSD2,80140.6+6%

42Deuel County, SDSD4,40840.8+6%

43Sanborn County, SDSD2,38840.8+14%

44Jones County, SDSD91341.1+12%

45Haakon County, SDSD1,80241.3+30%

46Faulk County, SDSD2,17841.5+6%

47Clark County, SDSD4,03141.6+7%

48Edmunds County, SDSD4,02241.6+3%

49Marshall County, SDSD4,42641.6+7%

50Douglas County, SDSD2,88841.8+13%

51Campbell County, SDSD1,37741.9+7%

52Hyde County, SDSD1,19142.2+9%

53Miner County, SDSD2,28142.5+9%

54Kingsbury County, SDSD5,28442.7+7%

55Walworth County, SDSD5,21742.8+7%

56Day County, SDSD5,48442.9+9%

57Hutchinson County, SDSD7,41343.1+4%

58Perkins County, SDSD2,85343.1+10%

59Custer County, SDSD9,43143.2+17%

60Hand County, SDSD3,12143.6+13%

61Gregory County, SDSD4,03744.3+16%

62Fall River County, SDSD7,46745.5+9%

63Potter County, SDSD2,37745.8+17%

64Jerauld County, SDSD1,65446.3+12%

65McPherson County, SDSD2,34747.6+2%

SHOWING 1–65 OF 65

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS