RANKING · 1990 CENSUS · 65 SHOWN OF 65

Least educated, South Dakota counties · 1990

South Dakota counties with the smallest share of adults 25+ holding a bachelor's degree or higher (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

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPBACHELOR'S DEGREE OR HIGHERVS 2000

01Buffalo County, SDSD1,8024.2%−22%

02Ziebach County, SDSD2,3898.5%−29%

03Grant County, SDSD7,5349.3%−37%

04Tripp County, SDSD5,7089.6%−29%

05Deuel County, SDSD4,4089.7%−27%

06Clark County, SDSD4,0319.8%−14%

07Charles Mix County, SDSD9,3039.9%−30%

08McPherson County, SDSD2,34710.0%−6%

09Marshall County, SDSD4,42610.2%−37%

10Miner County, SDSD2,28110.3%−24%

11Roberts County, SDSD10,25510.4%−22%

12Bennett County, SDSD3,30710.4%−18%

13Dewey County, SDSD5,41910.4%−14%

14Corson County, SDSD3,78110.5%−8%

15Lyman County, SDSD3,69410.5%−34%

16Faulk County, SDSD2,17810.6%−20%

17Campbell County, SDSD1,37710.7%−28%

18Jackson County, SDSD2,66610.9%−33%

19Aurora County, SDSD2,80111.0%−13%

20Douglas County, SDSD2,88811.2%−23%

21Hamlin County, SDSD6,90011.2%−13%

22Bon Homme County, SDSD7,24411.3%−26%

23Edmunds County, SDSD4,02211.3%−27%

24Jerauld County, SDSD1,65411.3%−8%

25Day County, SDSD5,48411.3%−26%

26Hutchinson County, SDSD7,41311.3%−20%

27Kingsbury County, SDSD5,28411.6%−29%

28Gregory County, SDSD4,03711.8%−2%

29Todd County, SDSD8,86311.8%−3%

30McCook County, SDSD5,96411.9%−27%

31Potter County, SDSD2,37712.3%−24%

32Butte County, SDSD10,85612.3%+1%

33Mellette County, SDSD2,13712.3%−26%

34Turner County, SDSD9,31412.5%−26%

35Perkins County, SDSD2,85312.7%−13%

36Haakon County, SDSD1,80212.7%−18%

37Spink County, SDSD6,15512.7%−12%

38Hand County, SDSD3,12112.8%−18%

39Sully County, SDSD1,47912.9%−21%

40Codington County, SDSD29,56212.9%−31%

41Union County, SDSD17,40213.9%−47%

42Moody County, SDSD6,63213.9%−20%

43Jones County, SDSD91314.4%−19%

44Walworth County, SDSD5,21714.5%−8%

45Hyde County, SDSD1,19114.5%−9%

46Stanley County, SDSD3,01814.6%−34%

47Davison County, SDSD20,06914.8%−27%

48Brule County, SDSD5,27814.9%−28%

49Beadle County, SDSD19,62415.1%−17%

50Hanson County, SDSD3,45615.3%+9%

51Harding County, SDSD1,33116.2%−9%

52Fall River County, SDSD7,46716.3%−15%

53Lincoln County, SDSD77,14516.4%−36%

54Sanborn County, SDSD2,38816.4%+11%

55Meade County, SDSD30,71116.4%−3%

56Custer County, SDSD9,43117.5%−28%

57Lake County, SDSD10,99318.5%−12%

58Yankton County, SDSD23,63518.6%−19%

59Lawrence County, SDSD29,45919.2%−20%

60Brown County, SDSD37,56120.7%−12%

61Pennington County, SDSD116,79221.2%−15%

62Minnehaha County, SDSD212,69121.3%−18%

63Hughes County, SDSD17,57025.6%−20%

64Brookings County, SDSD37,63527.3%−15%

65Clay County, SDSD15,03136.3%−6%

SHOWING 1–65 OF 65

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