RANKING · 2010 CENSUS · 65 SHOWN OF 65

Oldest by median age, South Dakota counties · 2010

South Dakota counties ranked by median age of residents (2010 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 2000

01McPherson County, SDSD2,34750.8+7%

02Potter County, SDSD2,37750.6+10%

03Fall River County, SDSD7,46750.5+11%

04Custer County, SDSD9,43150.3+16%

05Campbell County, SDSD1,37750.1+20%

06Haakon County, SDSD1,80248.8+18%

07Jerauld County, SDSD1,65448.6+5%

08Perkins County, SDSD2,85348.5+13%

09Douglas County, SDSD2,88848.3+16%

10Gregory County, SDSD4,03748.2+9%

11Hand County, SDSD3,12148.2+11%

12Day County, SDSD5,48447.9+12%

13Walworth County, SDSD5,21747.2+10%

14Kingsbury County, SDSD5,28447.1+10%

15Sanborn County, SDSD2,38847.1+15%

16Faulk County, SDSD2,17846.9+13%

17Jones County, SDSD91346.9+14%

18Hutchinson County, SDSD7,41346.8+9%

19Sully County, SDSD1,47946.6+17%

20Hyde County, SDSD1,19146.4+10%

21Miner County, SDSD2,28146.4+9%

22Clark County, SDSD4,03145.7+10%

23Edmunds County, SDSD4,02245.7+10%

24Tripp County, SDSD5,70845.3+15%

25Grant County, SDSD7,53445.1+12%

26Spink County, SDSD6,15544.4+11%

27Deuel County, SDSD4,40843.9+8%

28Turner County, SDSD9,31443.7+8%

29Harding County, SDSD1,33143.3+15%

30Aurora County, SDSD2,80143.2+6%

31Marshall County, SDSD4,42643.2+4%

32Bon Homme County, SDSD7,24443.1+7%

33McCook County, SDSD5,96442.7+11%

34Stanley County, SDSD3,01841.9+11%

35Brule County, SDSD5,27841.3+12%

36Yankton County, SDSD23,63541.3+12%

37Beadle County, SDSD19,62441.2+3%

38Butte County, SDSD10,85641.1+8%

39Lawrence County, SDSD29,45941.0+10%

40Moody County, SDSD6,63240.5+9%

41Union County, SDSD17,40240.2+9%

42Lake County, SDSD10,99339.9+9%

43Hughes County, SDSD17,57039.8+6%

44Roberts County, SDSD10,25539.5+6%

45Brown County, SDSD37,56138.6+4%

46Charles Mix County, SDSD9,30338.2+7%

47Davison County, SDSD20,06937.8+5%

48Codington County, SDSD29,56237.7+7%

49Hamlin County, SDSD6,90036.8−3%

50Pennington County, SDSD116,79236.8+5%

51Lyman County, SDSD3,69436.1+5%

52Meade County, SDSD30,71135.9+7%

53Hanson County, SDSD3,45635.5−1%

54Minnehaha County, SDSD212,69134.5+3%

55Mellette County, SDSD2,13734.2+7%

56Lincoln County, SDSD77,14532.8−4%

57Jackson County, SDSD2,66631.5+3%

58Dewey County, SDSD5,41930.0+13%

59Corson County, SDSD3,78129.7+5%

60Bennett County, SDSD3,30728.7−2%

61Brookings County, SDSD37,63526.3−1%

62Ziebach County, SDSD2,38925.4+7%

63Buffalo County, SDSD1,80225.0+7%

64Clay County, SDSD15,03125.0+0%

65Todd County, SDSD8,86324.0+11%

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