RANKING · 2020 CENSUS · 66 SHOWN OF 66

Oldest by median age, South Dakota counties · 2020

South Dakota counties ranked by median age of residents (2020 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

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

01Custer County, SDSD9,43156.4+31%

02Fall River County, SDSD7,46755.1+21%

03Campbell County, SDSD1,37753.5+28%

04Potter County, SDSD2,37752.2+14%

05McPherson County, SDSD2,34751.6+8%

06Jerauld County, SDSD1,65450.5+9%

07Gregory County, SDSD4,03748.0+8%

08Day County, SDSD5,48447.2+10%

09Perkins County, SDSD2,85347.2+10%

10Hand County, SDSD3,12146.9+8%

11Douglas County, SDSD2,88846.6+11%

12Faulk County, SDSD2,17846.4+12%

13Hyde County, SDSD1,19145.5+8%

14Sully County, SDSD1,47945.4+13%

15Miner County, SDSD2,28145.3+7%

16Jones County, SDSD91345.2+10%

17Grant County, SDSD7,53444.8+11%

18Kingsbury County, SDSD5,28444.8+5%

19Edmunds County, SDSD4,02244.7+7%

20Deuel County, SDSD4,40843.9+8%

21Walworth County, SDSD5,21743.7+2%

22Lawrence County, SDSD29,45943.5+17%

23Brule County, SDSD5,27843.3+17%

24Haakon County, SDSD1,80243.3+5%

25Bon Homme County, SDSD7,24443.1+7%

26Tripp County, SDSD5,70843.0+9%

27Spink County, SDSD6,15542.9+8%

28Marshall County, SDSD4,42642.6+2%

29Stanley County, SDSD3,01842.6+13%

30Hutchinson County, SDSD7,41342.4−2%

31Yankton County, SDSD23,63542.3+14%

32Aurora County, SDSD2,80142.2+4%

33Turner County, SDSD9,31442.0+4%

34McCook County, SDSD5,96441.6+8%

35Butte County, SDSD10,85641.3+9%

36Harding County, SDSD1,33141.2+10%

37Moody County, SDSD6,63241.0+11%

38Union County, SDSD17,40241.0+11%

39Sanborn County, SDSD2,38840.5−1%

40Lake County, SDSD10,99340.0+10%

41Clark County, SDSD4,03139.8−4%

42Davison County, SDSD20,06939.5+10%

43Hanson County, SDSD3,45639.3+9%

44Hughes County, SDSD17,57039.3+5%

45Roberts County, SDSD10,25539.2+6%

46Codington County, SDSD29,56239.1+11%

47Pennington County, SDSD116,79238.9+11%

48Brown County, SDSD37,56138.2+3%

49Charles Mix County, SDSD9,30336.9+3%

50Meade County, SDSD30,71136.7+10%

51Beadle County, SDSD19,62436.2−10%

52Minnehaha County, SDSD212,69135.9+7%

53Lyman County, SDSD3,69435.7+3%

54Hamlin County, SDSD6,90035.1−8%

55Lincoln County, SDSD77,14535.0+3%

56Mellette County, SDSD2,13734.8+8%

57Jackson County, SDSD2,66633.5+9%

58Dewey County, SDSD5,41932.4+22%

59Bennett County, SDSD3,30732.3+11%

60Corson County, SDSD3,78130.5+8%

61Brookings County, SDSD37,63529.7+12%

62Ziebach County, SDSD2,38928.9+21%

63Buffalo County, SDSD1,80225.8+10%

64Oglala Lakota County, SDSD13,33825.7–

65Clay County, SDSD15,03125.1+1%

66Todd County, SDSD8,86325.1+16%

SHOWING 1–66 OF 66

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