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Counties · South Dakota

Counties of South Dakota

South Dakota has 66 counties. Minnehaha County is the largest with 212,691 residents in 2025. 40 of the 66 gained residents between 2020 and 2025 by the Census Bureau's estimates.

What counties are in South Dakota?

Sorted by the 2025 population estimate; sort by any column.

Counties of South Dakota: 2025 estimate, change since 2020, ACS 2020-2024 5-year estimates
Minnehaha County212,691+7.9%4047$76,880$287,600
Pennington County116,792+6.9%3425$74,517$302,200
Lincoln County77,145+18.4%2613$99,166$348,300
Brookings County37,635+9.5%367$70,064$264,600
Brown County37,561−1.9%598$70,898$221,100
Meade County30,711+2.9%167$74,790$310,900
Codington County29,562+4.4%248$72,727$237,700
Lawrence County29,459+14.3%118$73,384$346,500
Yankton County23,635+1.4%175$72,821$225,900
Davison County20,069+0.6%155$66,208$205,800
Beadle County19,624+2.5%496$67,681$175,100
Hughes County17,570−1.1%54$81,395$242,000
Union County17,402+3.5%194$89,636$301,100
Clay County15,031+0.4%173$56,850$232,300
Oglala Lakota County13,338−2.5%73$41,417$52,900
Lake County10,993−0.6%274$76,808$247,600
Butte County10,856+6.0%73$75,652$244,600
Roberts County10,255−0.3%444$65,130$154,500
Custer County9,431+13.4%52$84,112$372,100
Turner County9,314+7.4%292$75,771$222,900
Charles Mix County9,303−0.8%343$64,038$170,600
Todd County8,863−4.9%112$42,075$53,900
Grant County7,534−0.4%262$75,028$171,000
Fall River County7,467+7.2%122$67,917$193,200
Hutchinson County7,413−0.2%363$73,977$163,000
Bon Homme County7,244+3.5%72$64,435$134,100
Hamlin County6,900+11.8%222$87,101$208,600
Moody County6,632+4.6%222$78,427$226,500
Spink County6,155−3.2%533$70,139$123,300
McCook County5,964+5.0%232$83,852$230,100
Tripp County5,708+1.4%482$58,987$132,900
Day County5,484+0.6%373$66,033$173,600
Dewey County5,419+3.3%92$54,104$69,600
Kingsbury County5,284+2.0%232$74,000$169,500
Brule County5,278+0.5%292$73,720$216,800
Walworth County5,217−1.9%62$65,026$136,600
Marshall County4,426+2.8%351$78,156$156,500
Deuel County4,408+2.6%232$83,112$205,900
Gregory County4,037+1.3%152$62,917$139,900
Clark County4,031+5.1%401$70,726$158,400
Edmunds County4,022+1.0%402$81,630$163,300
Corson County3,781−3.0%142$46,406$69,800
Lyman County3,694−0.5%132$67,143$165,800
Hanson County3,456−0.2%201$81,071$191,200
Bennett County3,307−2.2%22$53,750$156,400
Hand County3,121−0.8%402$74,635$159,300
Stanley County3,018+1.3%11$87,712$203,500
Douglas County2,888+1.9%201$86,442$166,900
Perkins County2,853+0.8%421$66,908$114,600
Aurora County2,801+2.1%251$72,885$151,900
Jackson County2,666−4.9%92$35,417$117,300
Ziebach County2,389−1.0%41$53,958$99,600
Sanborn County2,388+2.3%211$78,750$135,600
Potter County2,377−3.9%41$72,045$121,300
McPherson County2,347−2.5%131$66,906$85,600
Miner County2,281−0.7%241$76,140$142,600
Faulk County2,178+2.4%341$57,750$147,500
Mellette County2,137+11.4%181$54,076$84,100
Buffalo County1,802−7.3%31$47,045$117,800
Haakon County1,802−3.9%21$65,625$164,200
Jerauld County1,654−0.4%171$73,750$150,800
Sully County1,479+2.2%31$72,578$205,400
Campbell County1,377+0.1%41$68,929$115,900
Harding County1,331+2.0%21$80,441$166,100
Hyde County1,191−5.4%41$73,472$181,600
Jones County913−0.8%141$65,119$139,600

Source: PEP Vintage 2025 (CO-EST2025); American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Census population estimates

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections