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Midwest county atlas

South Dakota county map

Explore all 66 counties. Select a county to see its map, or download a copy for your next project.

2025 Census boundaries66 mapped unitsCapital: Pierre
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Boundary map 100%
Labelled map of South Dakota counties Aurora CountyBeadle CountyBennett CountyBon Homme CountyBrookings CountyBrown CountyBrule CountyBuffalo CountyButte CountyCampbell CountyCharles Mix CountyClark CountyClay CountyCodington CountyCorson CountyCuster CountyDavison CountyDay CountyDeuel CountyDewey CountyDouglas CountyEdmunds CountyFall River CountyFaulk CountyGrant CountyGregory CountyHaakon CountyHamlin CountyHand CountyHanson CountyHarding CountyHughes CountyHutchinson CountyHyde CountyJackson CountyJerauld CountyJones CountyKingsbury CountyLake CountyLawrence CountyLincoln CountyLyman CountyMarshall CountyMcCook CountyMcPherson CountyMeade CountyMellette CountyMiner CountyMinnehaha CountyMoody CountyOglala Lakota CountyPennington CountyPerkins CountyPotter CountyRoberts CountySanborn CountySpink CountyStanley CountySully CountyTodd CountyTripp CountyTurner CountyUnion CountyWalworth CountyYankton CountyZiebach County
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2025 U.S. Census boundaries. Zoom to reveal more names. Drag to pan when zoomed; use arrow keys, + and − with the map focused.

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SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Crowded names use a numbered key. Numbered quiz maps use the county list / answer key (CSV). Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore South Dakota with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Map scope: Use the boundary map for names and shapes, or the interactive background viewer for roads, terrain, and aerial imagery. County boundaries do not identify parcels or ZIP codes.

South Dakota county geography overview

South Dakota has 66 counties, which places it 23rd among the 50 state and District of Columbia maps in this atlas when ordered by number of county-level units. Their combined 75,807.9 square miles of land place the state 16th by mapped land area.

The average county-level area is 1,149 square miles, while the median is 909 square miles. The median is often the better description of a typical unit because one or two very large areas can pull the average upward. The five largest units together account for about 19% of the state’s mapped land area.

66county-level units
909 sq mimedian land area
3,470.9 sq milargest unit
2%share of mapped area that is water

Largest and smallest South Dakota counties

Meade County is the largest county-level unit by land area at 3,470.9 square miles. It represents about 5% of all mapped land in South Dakota. At the other end of the range, Clay County has 412 square miles of land.

Largest by land area

  1. Meade County3,470.9 sq mi
  2. Perkins County2,870.5 sq mi
  3. Pennington County2,776.8 sq mi
  4. Harding County2,671.6 sq mi
  5. Corson County2,469.7 sq mi

Smallest by land area

  1. Clay County412 sq mi
  2. Douglas County431.8 sq mi
  3. Hanson County434.6 sq mi
  4. Davison County435.6 sq mi
  5. Union County460.8 sq mi

Rankings use land area rather than total area. This avoids making coastal or lake counties appear larger solely because their boundaries include extensive water.

Alphabetical list of South Dakota counties

The table is alphabetical, so it works as a name and FIPS-code reference rather than an area ranking. Every identifier begins with the South Dakota state FIPS prefix 46. Land and water figures are rounded to one decimal place.

66 county-level areas

Download county data / numbered map key (CSV)
No.NameFIPS codeLand areaWater area
1Aurora County46003708.5 sq mi4.3 sq mi
2Beadle County460051,258.7 sq mi6.1 sq mi
3Bennett County460071,184.6 sq mi5.8 sq mi
4Bon Homme County46009563.5 sq mi18.1 sq mi
5Brookings County46011792.2 sq mi12.7 sq mi
6Brown County460131,713 sq mi17.9 sq mi
7Brule County46015817.2 sq mi29.3 sq mi
8Buffalo County46017471.4 sq mi16.4 sq mi
9Butte County460192,250 sq mi16.5 sq mi
10Campbell County46021733.8 sq mi37.1 sq mi
11Charles Mix County460231,097.1 sq mi53.1 sq mi
12Clark County46025957.5 sq mi10 sq mi
13Clay County46027412 sq mi5.4 sq mi
14Codington County46029687.6 sq mi29.6 sq mi
15Corson County460312,469.7 sq mi60 sq mi
16Custer County460331,556.9 sq mi2.1 sq mi
17Davison County46035435.6 sq mi1.3 sq mi
18Day County460371,028.5 sq mi62.6 sq mi
19Deuel County46039622.7 sq mi13.9 sq mi
20Dewey County460412,302.4 sq mi142.9 sq mi
21Douglas County46043431.8 sq mi1.9 sq mi
22Edmunds County460451,126 sq mi25.1 sq mi
23Fall River County460471,739.9 sq mi9.3 sq mi
24Faulk County46049981.7 sq mi24.2 sq mi
25Grant County46051681.4 sq mi6.1 sq mi
26Gregory County460531,014.9 sq mi38.6 sq mi
27Haakon County460551,810.5 sq mi16.4 sq mi
28Hamlin County46057507.1 sq mi31 sq mi
29Hand County460591,436.6 sq mi3.6 sq mi
30Hanson County46061434.6 sq mi0.8 sq mi
31Harding County460632,671.6 sq mi6.5 sq mi
32Hughes County46065741.5 sq mi59.2 sq mi
33Hutchinson County46067813 sq mi1.4 sq mi
34Hyde County46069860.6 sq mi5.6 sq mi
35Jackson County460711,863.9 sq mi7.4 sq mi
36Jerauld County46073526.1 sq mi6.5 sq mi
37Jones County46075969.7 sq mi1.2 sq mi
38Kingsbury County46077832.2 sq mi31.5 sq mi
39Lake County46079562.9 sq mi12.3 sq mi
40Lawrence County46081800.1 sq mi0.3 sq mi
41Lincoln County46083577.3 sq mi0.5 sq mi
42Lyman County460851,642.3 sq mi64.6 sq mi
43Marshall County46091838.1 sq mi48.1 sq mi
44McCook County46087574.2 sq mi2.7 sq mi
45McPherson County460891,136.7 sq mi14.9 sq mi
46Meade County460933,470.9 sq mi11.9 sq mi
47Mellette County460951,307.3 sq mi3.6 sq mi
48Miner County46097570.2 sq mi1.8 sq mi
49Minnehaha County46099806.9 sq mi7 sq mi
50Moody County46101519.4 sq mi1.4 sq mi
51Oglala Lakota County461022,093.6 sq mi2.8 sq mi
52Pennington County461032,776.8 sq mi7.7 sq mi
53Perkins County461052,870.5 sq mi19.5 sq mi
54Potter County46107861.1 sq mi37.5 sq mi
55Roberts County461091,101.1 sq mi34.7 sq mi
56Sanborn County46111569.2 sq mi1.2 sq mi
57Spink County461151,503.5 sq mi6.2 sq mi
58Stanley County461171,444.4 sq mi72.7 sq mi
59Sully County461191,006.7 sq mi63.5 sq mi
60Todd County461211,388.6 sq mi2.3 sq mi
61Tripp County461231,612.3 sq mi5.2 sq mi
62Turner County46125617.1 sq mi0.6 sq mi
63Union County46127460.8 sq mi6.4 sq mi
64Walworth County46129707.5 sq mi37.2 sq mi
65Yankton County46135521.2 sq mi11.1 sq mi
66Ziebach County461371,961.2 sq mi9.3 sq mi

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, download a PDF from the controls above. Labelled exports use numbered callouts for crowded areas; numbered quiz maps match the alphabetical county list. SVG files keep the boundary lines sharp at larger paper sizes.

Frequently asked questions

How many counties are in South Dakota?

South Dakota has 66 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this South Dakota county map?

Yes. Choose Download / print and select PDF for a landscape Letter page, PNG for an image, or SVG for editable vector artwork. Because the map is SVG, its boundary lines stay sharp when scaled.

What is the largest county in South Dakota?

Meade County is the largest by land area in this dataset at 3,470.9 square miles. This is an area ranking, not a population ranking.

What is the smallest county in South Dakota?

Clay County is the smallest by land area in this dataset at 412 square miles.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:5,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 27, 2026.