RANKING · 2020 CENSUS · 66 SHOWN OF 66

Largest by population, South Dakota counties · 2020

The most populous South Dakota counties as of the 2020 population estimates. This list covers the 66 counties in South Dakota that qualify, ranked against each other statewide.

South DakotaAll states All rankings

SAME RANKING BYCities States Metros ZIP codes

RELATEDFastest growing Fastest shrinking Most population gained Most population lost Most densely populated Most sparsely populated

YEAR1990 2000 2010 2020 2025

RANKPLACESTATETOTAL POPULATIONVS 2000

01Minnehaha County, SDSD197,214+33%

02Pennington County, SDSD109,222+23%

03Lincoln County, SDSD65,161+170%

04Brown County, SDSD38,301+8%

05Brookings County, SDSD34,375+22%

06Meade County, SDSD29,852+23%

07Codington County, SDSD28,325+9%

08Lawrence County, SDSD25,768+18%

09Yankton County, SDSD23,310+8%

10Davison County, SDSD19,956+6%

11Beadle County, SDSD19,149+12%

12Hughes County, SDSD17,765+8%

13Union County, SDSD16,811+34%

14Clay County, SDSD14,967+11%

15Oglala Lakota County, SDSD13,672–

16Lake County, SDSD11,059−2%

17Roberts County, SDSD10,280+3%

18Butte County, SDSD10,243+13%

19Charles Mix County, SDSD9,373+0%

20Todd County, SDSD9,319+3%

21Turner County, SDSD8,673−2%

22Custer County, SDSD8,318+14%

23Grant County, SDSD7,556−4%

24Hutchinson County, SDSD7,427−8%

25Bon Homme County, SDSD7,003−4%

26Fall River County, SDSD6,973−6%

27Spink County, SDSD6,361−15%

28Moody County, SDSD6,336−4%

29Hamlin County, SDSD6,164+11%

30McCook County, SDSD5,682−3%

31Tripp County, SDSD5,624−13%

32Day County, SDSD5,449−13%

33Walworth County, SDSD5,315−11%

34Brule County, SDSD5,247−2%

35Dewey County, SDSD5,239−12%

36Kingsbury County, SDSD5,187−11%

37Marshall County, SDSD4,306−6%

38Deuel County, SDSD4,295−5%

39Gregory County, SDSD3,994−17%

40Edmunds County, SDSD3,986−9%

41Corson County, SDSD3,902−7%

42Clark County, SDSD3,837−7%

43Lyman County, SDSD3,718−5%

44Hanson County, SDSD3,461+10%

45Bennett County, SDSD3,381−5%

46Hand County, SDSD3,145−16%

47Stanley County, SDSD2,980+8%

48Douglas County, SDSD2,835−18%

49Perkins County, SDSD2,835−16%

50Jackson County, SDSD2,806−4%

51Aurora County, SDSD2,747−10%

52Potter County, SDSD2,472−8%

53Ziebach County, SDSD2,413−4%

54McPherson County, SDSD2,411−17%

55Sanborn County, SDSD2,330−13%

56Miner County, SDSD2,298−20%

57Faulk County, SDSD2,125−20%

58Buffalo County, SDSD1,948−4%

59Mellette County, SDSD1,918−8%

60Haakon County, SDSD1,872−15%

61Jerauld County, SDSD1,663−28%

62Sully County, SDSD1,446−7%

63Campbell County, SDSD1,377−23%

64Harding County, SDSD1,311−3%

65Hyde County, SDSD1,262−24%

66Jones County, SDSD917−23%

SHOWING 1–66 OF 66

Download CSV (full list, 66 rows)

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