RANKING · 2025 ESTIMATES · 66 SHOWN OF 66

Fastest growing, South Dakota counties

South Dakota counties ranked by population growth from the 2020 census to 2025. This list covers the 66 counties in South Dakota that qualify, ranked against each other statewide. The median across all 66 is +1.1%. Biggest climber in the top 100 since 2020: Mellette County, SD, up 51 places to #5.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Lincoln County, SDSD77,145+18.4%−38.0 pts

02▲7Lawrence County, SDSD29,459+14.3%+8.8 pts

03▲25Custer County, SDSD9,431+13.4%−4.4 pts

04▲10Hamlin County, SDSD6,900+11.9%+0.6 pts

05▲51Mellette County, SDSD2,137+11.4%+13.9 pts

06▲2Brookings County, SDSD37,635+9.5%−2.5 pts

07▼3Minnehaha County, SDSD212,691+7.8%−11.9 pts

08▲10Turner County, SDSD9,314+7.4%+4.2 pts

09▲34Fall River County, SDSD7,467+7.1%+5.7 pts

10▼4Pennington County, SDSD116,792+6.9%−1.9 pts

11▲15Butte County, SDSD10,856+6.0%−8.9 pts

12▲5Clark County, SDSD4,031+5.1%+11.0 pts

13▲17McCook County, SDSD5,964+5.0%+2.4 pts

14▲33Moody County, SDSD6,632+4.7%+3.3 pts

15▲1Codington County, SDSD29,562+4.4%−9.7 pts

16▼13Union County, SDSD17,402+3.5%−20.0 pts

17▲19Bon Homme County, SDSD7,244+3.4%+1.0 pts

18▲21Dewey County, SDSD5,419+3.4%−4.7 pts

19▼17Meade County, SDSD30,711+2.9%−8.0 pts

20▲39Marshall County, SDSD4,426+2.8%+8.3 pts

21▲21Deuel County, SDSD4,408+2.6%+3.2 pts

22▲40Faulk County, SDSD2,178+2.5%+6.3 pts

23▲15Sanborn County, SDSD2,388+2.5%+8.1 pts

24▼19Beadle County, SDSD19,624+2.5%+9.2 pts

25▼14Sully County, SDSD1,479+2.3%+4.4 pts

26▼1Aurora County, SDSD2,801+2.0%+4.4 pts

27▲4Kingsbury County, SDSD5,284+1.9%+3.7 pts

28▲26Douglas County, SDSD2,888+1.9%+9.6 pts

29▼16Harding County, SDSD1,331+1.5%+20.5 pts

30▲4Tripp County, SDSD5,708+1.5%+8.6 pts

31▼11Yankton County, SDSD23,635+1.4%−11.1 pts

32Stanley County, SDSD3,018+1.3%−11.7 pts

33▲24Gregory County, SDSD4,037+1.1%+11.7 pts

34▲11Edmunds County, SDSD4,022+0.9%+0.7 pts

35▲17Day County, SDSD5,484+0.6%+10.8 pts

36▲17Perkins County, SDSD2,853+0.6%+15.1 pts

37▼4Brule County, SDSD5,278+0.6%+2.8 pts

38▼15Davison County, SDSD20,069+0.6%−6.5 pts

39▼32Clay County, SDSD15,031+0.4%−2.2 pts

40▲15Campbell County, SDSD1,3770.0%+9.3 pts

41▼22Hanson County, SDSD3,456-0.1%−5.0 pts

42▼13Hutchinson County, SDSD7,413-0.2%+2.1 pts

43▼16Roberts County, SDSD10,255-0.2%−1.3 pts

44▼23Grant County, SDSD7,534-0.3%+6.0 pts

45▲16Jones County, SDSD913-0.4%+9.5 pts

46▲19Jerauld County, SDSD1,654-0.5%+4.8 pts

47▼7Lake County, SDSD10,993-0.6%−7.5 pts

48▼11Lyman County, SDSD3,694-0.6%−7.7 pts

49▲2Miner County, SDSD2,281-0.7%+11.1 pts

50▼28Charles Mix County, SDSD9,303-0.7%−3.1 pts

51▲9Hand County, SDSD3,121-0.8%+11.7 pts

52▲12Ziebach County, SDSD2,389-1.0%−14.5 pts

53▼38Hughes County, SDSD17,570-1.1%−12.3 pts

54▼8Walworth County, SDSD5,217-1.8%0.0 pts

55▼43Brown County, SDSD37,561-1.9%−1.6 pts

56▼15Bennett County, SDSD3,307-2.2%−13.7 pts

57Oglala Lakota County, SDSD13,338-2.4%–

58▼14McPherson County, SDSD2,347-2.7%+7.4 pts

59▼9Corson County, SDSD3,781-3.1%−2.8 pts

60▼25Spink County, SDSD6,155-3.2%+3.4 pts

61▼12Haakon County, SDSD1,802-3.7%+12.6 pts

62▼52Potter County, SDSD2,377-3.8%+11.7 pts

63▼15Todd County, SDSD8,863-4.9%−13.3 pts

64▼6Jackson County, SDSD2,666-5.0%−9.2 pts

65▼2Hyde County, SDSD1,191-5.6%−4.2 pts

66▼42Buffalo County, SDSD1,802-7.5%−23.0 pts

SHOWING 1–66 OF 66

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU POPULATION ESTIMATES