South Dakota County Map
Labeled county boundary map and complete directory of all 66 counties in South Dakota (SD, State FIPS 46). View 5-digit FIPS codes, county seats, land area in square miles, and official county government websites below.
Showing all 66 counties in South Dakota. Use the search box below to filter by county name, 5-digit FIPS code, or county seat.
South Dakota County Statistics & Summary
Total Counties
66
Largest by Land Area
Meade County
Smallest by Land Area
Clay County
All 66 Counties in South Dakota (FIPS, County Seat & Official Website)
| County Name | 5-Digit FIPS | Seat / Administrative Center | Land Area (sq mi) | Coordinates | Official Website |
|---|---|---|---|---|---|
| Aurora County | 46003 | Plankinton | 708.5 | 43.725°, -98.578° | Official Site |
| Beadle County | 46005 | Huron | 1,258.7 | 44.418°, -98.279° | Official Site |
| Bennett County | 46007 | Martin | 1,184.6 | 43.187°, -101.677° | — |
| Bon Homme County | 46009 | Tyndall | 563.5 | 42.986°, -97.884° | Official Site |
| Brookings County | 46011 | Brookings | 792.2 | 44.377°, -96.798° | Official Site |
| Brown County | 46013 | Aberdeen | 1,713 | 45.589°, -98.352° | Official Site |
| Brule County | 46015 | Chamberlain | 817.2 | 43.730°, -99.093° | Official Site |
| Buffalo County | 46017 | Gann Valley | 471.4 | 44.044°, -99.204° | Official Site |
| Butte County | 46019 | Belle Fourche | 2,250 | 44.896°, -103.501° | Official Site |
| Campbell County | 46021 | Mound City | 733.8 | 45.786°, -100.002° | — |
| Charles Mix County | 46023 | Lake Andes | 1,097.1 | 43.206°, -98.595° | Official Site |
| Clark County | 46025 | Clark | 957.5 | 44.855°, -97.725° | Official Site |
| Clay County | 46027 | Vermillion | 412 | 42.916°, -96.980° | Official Site |
| Codington County | 46029 | Watertown | 687.6 | 44.966°, -97.199° | Official Site |
| Corson County | 46031 | McIntosh | 2,469.7 | 45.688°, -101.185° | Official Site |
| Custer County | 46033 | Custer | 1,556.9 | 43.685°, -103.437° | Official Site |
| Davison County | 46035 | Mitchell | 435.6 | 43.680°, -98.156° | Official Site |
| Day County | 46037 | Webster | 1,028.5 | 45.355°, -97.581° | Official Site |
| Deuel County | 46039 | Clear Lake | 622.7 | 44.756°, -96.690° | Official Site |
| Dewey County | 46041 | Timber Lake | 2,302.4 | 45.148°, -100.838° | — |
| Douglas County | 46043 | Armour | 431.8 | 43.392°, -98.358° | Official Site |
| Edmunds County | 46045 | Ipswich | 1,126 | 45.412°, -99.205° | Official Site |
| Fall River County | 46047 | Hot Springs | 1,739.9 | 43.222°, -103.513° | Official Site |
| Faulk County | 46049 | Faulkton | 981.7 | 45.066°, -99.154° | — |
| Grant County | 46051 | Milbank | 681.4 | 45.173°, -96.772° | Official Site |
| Gregory County | 46053 | Burke | 1,014.9 | 43.175°, -99.207° | Official Site |
| Haakon County | 46055 | Philip | 1,810.5 | 44.288°, -101.541° | — |
| Hamlin County | 46057 | Hayti | 507.1 | 44.681°, -97.179° | Official Site |
| Hand County | 46059 | Miller | 1,436.6 | 44.547°, -99.005° | Official Site |
| Hanson County | 46061 | Alexandria | 434.6 | 43.681°, -97.797° | Official Site |
| Harding County | 46063 | Buffalo | 2,671.6 | 45.596°, -103.474° | Official Site |
| Hughes County | 46065 | Pierre | 741.5 | 44.385°, -99.976° | Official Site |
| Hutchinson County | 46067 | Olivet | 813 | 43.337°, -97.749° | Official Site |
| Hyde County | 46069 | Highmore | 860.6 | 44.537°, -99.473° | Official Site |
| Jackson County | 46071 | Kadoka | 1,863.9 | 43.678°, -101.626° | — |
| Jerauld County | 46073 | Wessington Springs | 526.1 | 44.063°, -98.623° | Official Site |
| Jones County | 46075 | Murdo | 969.7 | 43.952°, -100.686° | — |
| Kingsbury County | 46077 | De Smet | 832.2 | 44.363°, -97.499° | Official Site |
| Lake County | 46079 | Madison | 562.9 | 44.028°, -97.123° | Official Site |
| Lawrence County | 46081 | Deadwood | 800.1 | 44.349°, -103.806° | Official Site |
| Lincoln County | 46083 | Canton | 577.3 | 43.279°, -96.722° | Official Site |
| Lyman County | 46085 | Kennebec | 1,642.3 | 43.895°, -99.842° | Official Site |
| Marshall County | 46091 | Britton | 838.1 | 45.737°, -97.581° | Official Site |
| McCook County | 46087 | Salem | 574.2 | 43.680°, -97.358° | Official Site |
| McPherson County | 46089 | Leola | 1,136.7 | 45.831°, -99.216° | Official Site |
| Meade County | 46093 | Sturgis | 3,470.9 | 44.605°, -102.714° | Official Site |
| Mellette County | 46095 | White River | 1,307.3 | 43.581°, -100.755° | Official Site |
| Miner County | 46097 | Howard | 570.2 | 44.017°, -97.600° | Official Site |
| Minnehaha County | 46099 | Sioux Falls | 806.9 | 43.667°, -96.796° | Official Site |
| Moody County | 46101 | Flandreau | 519.4 | 44.012°, -96.676° | Official Site |
| Oglala Lakota County | 46102 | Hot Springs | 2,093.6 | 43.337°, -102.561° | Official Site |
| Pennington County | 46103 | Rapid City | 2,776.8 | 44.002°, -102.824° | Official Site |
| Perkins County | 46105 | Bison | 2,870.5 | 45.483°, -102.468° | Official Site |
| Potter County | 46107 | Gettysburg | 861.1 | 45.053°, -99.962° | — |
| Roberts County | 46109 | Sisseton | 1,101.1 | 45.623°, -96.948° | Official Site |
| Sanborn County | 46111 | Woonsocket | 569.2 | 44.019°, -98.092° | — |
| Spink County | 46115 | Redfield | 1,503.5 | 44.924°, -98.340° | Official Site |
| Stanley County | 46117 | Fort Pierre | 1,444.4 | 44.414°, -100.748° | Official Site |
| Sully County | 46119 | Onida | 1,006.7 | 44.722°, -100.131° | Official Site |
| Todd County | 46121 | Winner | 1,388.6 | 43.210°, -100.708° | — |
| Tripp County | 46123 | Winner | 1,612.3 | 43.350°, -99.876° | Official Site |
| Turner County | 46125 | Parker | 617.1 | 43.309°, -97.150° | Official Site |
| Union County | 46127 | Elk Point | 462 | 42.831°, -96.651° | Official Site |
| Walworth County | 46129 | Selby | 707.5 | 45.428°, -100.028° | Official Site |
| Yankton County | 46135 | Yankton | 521.2 | 43.007°, -97.388° | Official Site |
| Ziebach County | 46137 | Dupree | 1,961.2 | 44.990°, -101.661° | Official Site |
How South Dakota Counties and 5-Digit FIPS Codes Work
In U.S. Census Bureau TIGER/Line geography, South Dakota (SD) is assigned the 2-digit state Federal Information Processing Series (FIPS) code 46 and covers 75,809 square miles of land area across 66 counties in the Central Time (CT) in the east and Mountain Time (MT) in the west zone (with Pierre as the state capital). Every county in the directory above carries a unique 5-digit GEOID formed by combining state prefix 46 with a 3-digit county code (ranging alphabetically from Aurora County at 46003 to Ziebach County at 46137).
Because U.S. Postal Service 5-digit ZIP Codes follow mail carrier delivery routes rather than local government borders, many postal addresses in South Dakota carry a neighboring city’s mailing name or sit inside a multi-county ZIP Code Tabulation Area (ZCTA). Property tax assessments, deed recording, circuit and county court venue, voter registration precincts, sheriff jurisdiction, and county sales tax rates in South Dakota are determined by the legal county boundary shown on the map above rather than the postal city name on an envelope.
Land area figures in square miles and internal centroid coordinates (INTPTLAT, INTPTLON) come directly from the U.S. Census Bureau’s current TIGERweb State_County benchmark, while 66 administrative seats and 56 verified official government websites are cross-referenced from Wikidata (CC0). Need a clean outline worksheet without county labels, or want to verify which South Dakota county a specific home or business address sits in? Open the Blank Map of South Dakota, run a street-segment check on Address to County Lookup, check multi-county postal overlap on ZIP Code to County Lookup, or browse all 50 states on the National U.S. County Map.
Adjacent State County Maps
Explore county maps and FIPS directories for states bordering South Dakota: