County Maps US

South Dakota County Map

South Dakota has 66 counties. Together they cover 75,808 sq mi of land and 935,094 people.

Neighbouring areas are given different colours so their shared borders read clearly. These colours carry no data.

Boundaries from the 2025 Census cartographic boundary file, generalised so that no point moves by more than half a pixel at this width. Select any area to open its page.
Counties
66
23rd most of the 51 states and DC
Population
935,094
46th largest
Land area
75,808
square miles
Density
12.3
people per square mile, computed

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025. Retrieved 30 August 2026.

Download this map

Free to use and redistribute. The boundaries are public-domain Census Bureau data; attribution to County Maps US is appreciated but not required.

Satellite view

Aerial imagery of South Dakota with the state boundary drawn on top. County lines are not drawn here: at this scale they would bury the picture, and the map above already carries them.

Aerial view of South Dakota from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 539 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

The extremes of South Dakota

Most populous

Minnehaha County

212,691

Least populous

Jones County

913

Largest by land area

Meade County

3,471 sq mi

Smallest by land area

Clay County

412 sq mi

Most densely populated

Minnehaha County

264 per sq mi

Highest median household income

Lincoln County

$99,166

Which is the largest county in South Dakota? The answer depends on whether you mean area or population.

The counties, by shape

Every one, drawn to its own scale so the small ones stay recognisable. Shape alone is not a size comparison; the table below carries the areas.

What the map does not say

The counties of South Dakota are nowhere near the same size. Meade County covers 3,471 sq mi of land, 8.4 times the 412 sq mi of Clay County. People are spread even less evenly: Minnehaha County packs 264 per sq mi while Harding County holds 0.50 per sq mi.

They were not drawn in one sitting either. Yankton County dates to 1862, and the boundaries were still being redrawn when Jones County was organised in 1916, 54 years later. Founding years come from Wikidata and are worth checking against the county's own history before citing.

Water is part of the picture too: 7.4% of Hughes County is water, the most in the state, which is why its land area and total area disagree. And 31 of the 66 counties here share their names with counties in other states, so searching by name alone can land in the wrong place; the A to Z index lists every duplicate.

All 66 counties of South Dakota

Sortable on any column. This table doubles as the text alternative to the map above: every area is a link, in alphabetical order, whether or not the map renders.

The 66 counties of South Dakota, with population, land area, density, median household income, county seat and FIPS code.
NamePopulationLand areaDensityMedian incomeSeatFIPS
Aurora County2,801708.5 sq mi4.0 per sq mi$72,885Plankinton46003
Beadle County19,6241,259 sq mi15.6 per sq mi$67,681Huron46005
Bennett County3,3071,185 sq mi2.8 per sq mi$53,750Martin46007
Bon Homme County7,244563.5 sq mi12.9 per sq mi$64,435Tyndall46009
Brookings County37,635792.2 sq mi47.5 per sq mi$70,064Brookings46011
Brown County37,5611,713 sq mi21.9 per sq mi$70,898Aberdeen46013
Brule County5,278817.2 sq mi6.5 per sq mi$73,720Chamberlain46015
Buffalo County1,802471.4 sq mi3.8 per sq mi$47,045Gann Valley46017
Butte County10,8562,250 sq mi4.8 per sq mi$75,652Belle Fourche46019
Campbell County1,377733.8 sq mi1.9 per sq mi$68,929Mound City46021
Charles Mix County9,3031,097 sq mi8.5 per sq mi$64,038Lake Andes46023
Clark County4,031957.5 sq mi4.2 per sq mi$70,726Clark46025
Clay County15,031412 sq mi36.5 per sq mi$56,850Vermillion46027
Codington County29,562687.6 sq mi43.0 per sq mi$72,727Watertown46029
Corson County3,7812,470 sq mi1.5 per sq mi$46,406McIntosh46031
Custer County9,4311,557 sq mi6.1 per sq mi$84,112Custer46033
Davison County20,069435.6 sq mi46.1 per sq mi$66,208Mitchell46035
Day County5,4841,028 sq mi5.3 per sq mi$66,033Webster46037
Deuel County4,408622.7 sq mi7.1 per sq mi$83,112Clear Lake46039
Dewey County5,4192,302 sq mi2.4 per sq mi$54,104Timber Lake46041
Douglas County2,888431.8 sq mi6.7 per sq mi$86,442Armour46043
Edmunds County4,0221,126 sq mi3.6 per sq mi$81,630Ipswich46045
Fall River County7,4671,740 sq mi4.3 per sq mi$67,917Hot Springs46047
Faulk County2,178981.7 sq mi2.2 per sq mi$57,750Faulkton46049
Grant County7,534681.4 sq mi11.1 per sq mi$75,028Milbank46051
Gregory County4,0371,015 sq mi4.0 per sq mi$62,917Burke46053
Haakon County1,8021,811 sq mi1.00 per sq mi$65,625Philip46055
Hamlin County6,900507.1 sq mi13.6 per sq mi$87,101Hayti46057
Hand County3,1211,437 sq mi2.2 per sq mi$74,635Miller46059
Hanson County3,456434.6 sq mi8.0 per sq mi$81,071Alexandria46061
Harding County1,3312,672 sq mi0.50 per sq mi$80,441Buffalo46063
Hughes County17,570741.5 sq mi23.7 per sq mi$81,395Pierre46065
Hutchinson County7,413813 sq mi9.1 per sq mi$73,977Olivet46067
Hyde County1,191860.6 sq mi1.4 per sq mi$73,472Highmore46069
Jackson County2,6661,864 sq mi1.4 per sq mi$35,417Kadoka46071
Jerauld County1,654526.1 sq mi3.1 per sq mi$73,750Wessington Springs46073
Jones County913969.7 sq mi0.94 per sq mi$65,119Murdo46075
Kingsbury County5,284832.2 sq mi6.4 per sq mi$74,000De Smet46077
Lake County10,993562.9 sq mi19.5 per sq mi$76,808Madison46079
Lawrence County29,459800.1 sq mi36.8 per sq mi$73,384Deadwood46081
Lincoln County77,145577.3 sq mi134 per sq mi$99,166Canton46083
Lyman County3,6941,642 sq mi2.3 per sq mi$67,143Kennebec46085
Marshall County4,426838.1 sq mi5.3 per sq mi$78,156Britton46091
McCook County5,964574.2 sq mi10.4 per sq mi$83,852Salem46087
McPherson County2,3471,137 sq mi2.1 per sq mi$66,906Leola46089
Meade County30,7113,471 sq mi8.9 per sq mi$74,790Sturgis46093
Mellette County2,1371,307 sq mi1.6 per sq mi$54,076White River46095
Miner County2,281570.2 sq mi4.0 per sq mi$76,140Howard46097
Minnehaha County212,691806.9 sq mi264 per sq mi$76,880Sioux Falls46099
Moody County6,632519.4 sq mi12.8 per sq mi$78,427Flandreau46101
Oglala Lakota County13,3382,094 sq mi6.4 per sq mi$41,417Hot Springs46102
Pennington County116,7922,777 sq mi42.1 per sq mi$74,517Rapid City46103
Perkins County2,8532,870 sq mi0.99 per sq mi$66,908Bison46105
Potter County2,377861.1 sq mi2.8 per sq mi$72,045Gettysburg46107
Roberts County10,2551,101 sq mi9.3 per sq mi$65,130Sisseton46109
Sanborn County2,388569.2 sq mi4.2 per sq mi$78,750Woonsocket46111
Spink County6,1551,503 sq mi4.1 per sq mi$70,139Redfield46115
Stanley County3,0181,444 sq mi2.1 per sq mi$87,712Fort Pierre46117
Sully County1,4791,007 sq mi1.5 per sq mi$72,578Onida46119
Todd County8,8631,389 sq mi6.4 per sq mi$42,075Winner46121
Tripp County5,7081,612 sq mi3.5 per sq mi$58,987Winner46123
Turner County9,314617.1 sq mi15.1 per sq mi$75,771Parker46125
Union County17,402460.8 sq mi37.8 per sq mi$89,636Elk Point46127
Walworth County5,217707.5 sq mi7.4 per sq mi$65,026Selby46129
Yankton County23,635521.2 sq mi45.3 per sq mi$72,821Yankton46135
Ziebach County2,3891,961 sq mi1.2 per sq mi$53,958Dupree46137

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

The ten most populous

  1. Minnehaha County212,691
  2. Pennington County116,792
  3. Lincoln County77,145
  4. Brookings County37,635
  5. Brown County37,561
  6. Meade County30,711
  7. Codington County29,562
  8. Lawrence County29,459
  9. Yankton County23,635
  10. Davison County20,069

Data on this page last rebuilt 30 August 2026. How these figures are produced.