South Dakota County Map, List of Counties in South Dakota with Seats

Written and Fact-checked by | Updated On: March 20, 2026 12:02 ET

The U.S. state of South Dakota is divided into 66 counties. Explore the South Dakota County Map, list of Counties in south-dakota along with their County Seats in alphabetical order and check their population, areas and the date of formation.

South Dakota County Map

South Dakota County Map About South Dakota County Map: The map showing the county boundary, all counties boundary, state capital and neighbouring states.

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About Counties of South Dakota

U.S State of South Dakota is seventeenth largest state by area. It is the fifth least populated state in United States. The state South Dakota became a state in the year 1889. South Dakota is located in the upper Midwestern part of the country. The state was named after Native American tribes called Lakota and Dakota Sioux. The capital city of the state is Pierre. The state is very famous for tourism and agriculture.

South Dakota Counties are 66 in number. The biggest county among the South Dakota Counties is Meade which covers 3,470.98 square miles. The other geographically big counties are Perkins and Pennington. Minnehaha County has the highest population with 197,214. Pennington and Lincoln counties have also large number of population of all the South Dakota Counties. The poorest county in the state is Ziebach County. The county that has highest per capita income is Union county among all South Dakota Counties. The largest cities of the state are Sioux Falls, Rapid City, Aberdeen, Brookings, Watertown, Mitchell, Yankton and Pierre.

U.S State of South Dakota follows federal form of government like all other states in the country. The supreme law of the land is the constitution of South Dakota. The authority of the state is divided among three branches of the state namely Executive branch, Legislative branch and Judicial branch. The citizens of South Dakota were blessed with an option that they can amend the constitution. The executive branch is headed by the governor of South Dakota. The legislative branch of the state consists of two houses namely the Senate and the House of Representatives. The judicial branch of the state is made up of many courts like the Supreme Court which is the highest court in the state, circuit courts and so on.

The U.S. state of South Dakota has 66 counties. It is the 34th-largest state by area and has a population of around 886,000, according to the 2020 Census. South Dakota is located in the Midwestern region of the United States.

List of Counties in South Dakota with County Seats

S.NCountyCounty seatFIPS codeFormedPopulationArea
1Aurora CountyPlankinton318812,747 (2020 Census)708 sq mi (1,834 km2)
2Beadle CountyHuron5187919,1491,259 sq mi (3,261 km2)
3Bennett CountyMartin719093,3811,185 sq mi (3,069 km2)
4Bon Homme CountyTyndall918627,003563 sq mi (1,458 km2)
5Brookings CountyBrookings11186234,375794 sq mi (2,056 km2)
6Brown CountyAberdeen13187938,3011,713 sq mi (4,437 km2)
7Brule CountyChamberlain1518755,247819 sq mi (2,121 km2)
8Buffalo CountyGann Valley1718731,948471 sq mi (1,220 km2)
9Butte CountyBelle Fourche19188310,2432,249 sq mi (5,825 km2)
10Campbell CountyMound City2118731,377736 sq mi (1,906 km2)
11Charles Mix CountyLake Andes2318629,3731,098 sq mi (2,844 km2)
12Clark CountyClark2518733,837958 sq mi (2,481 km2)
13Clay CountyVermillion27186214,967412 sq mi (1,067 km2)
14Codington CountyWatertown29187728,325688 sq mi (1,782 km2)
15Corson CountyMcIntosh3119093,9022,473 sq mi (6,405 km2)
16Custer CountyCuster3318758,3181,668 sq mi (4,320 km2)
17Davison CountyMitchell35187319,956436 sq mi (1,129 km2)
18Day CountyWebster3718795,4491,029 sq mi (2,665 km2)
19Deuel CountyClear Lake3918624,295624 sq mi (1,616 km2)
20Dewey CountyTimber Lake4118735,2392,303 sq mi (5,965 km2)
21Douglas CountyArmour4318732,835434 sq mi (1,124 km2)
22Edmunds CountyIpswich4518733,9861,146 sq mi (2,968 km2)
23Fall River CountyHot Springs4718836,9731,740 sq mi (4,507 km2)
24Faulk CountyFaulkton4918732,1251,000 sq mi (2,590 km2)
25Grant CountyMilbank5118737,666682 sq mi (1,766 km2)
26Gregory CountyBurke5318623,9941,016 sq mi (2,631 km2)
27Haakon CountyPhilip5519141,8721,813 sq mi (4,696 km2)
28Hamlin CountyHayti5718736,164511 sq mi (1,323 km2)
29Hand CountyMiller5918733,1451,437 sq mi (3,722 km2)
30Hanson CountyAlexandria6118733,461435 sq mi (1,127 km2)
31Harding CountyBuffalo6319091,3112,671 sq mi (6,918 km2)
32Hughes CountyPierre65188017,765741 sq mi (1,919 km2)
33Hutchinson CountyOlivet6718627,427813 sq mi (2,106 km2)
34Hyde CountyHighmore6918731,262861 sq mi (2,230 km2)
35Jackson CountyKadoka7119142,8061,869 sq mi (4,841 km2)
36Jerauld CountyWessington Springs7318831,663530 sq mi (1,373 km2)
37Jones CountyMurdo751916917971 sq mi (2,515 km2)
38Kingsbury CountyDe Smet7718735,187838 sq mi (2,170 km2)
39Lake CountyMadison79187311,059563 sq mi (1,458 km2)
40Lawrence CountyDeadwood81187525,768800 sq mi (2,072 km2)
41Lincoln CountyCanton83186765,161578 sq mi (1,497 km2)
42Lyman CountyKennebec8518733,7181,640 sq mi (4,248 km2)
43Marshall CountyBritton9118854,306839 sq mi (2,173 km2)
44McCook CountySalem8718735,682575 sq mi (1,489 km2)
45McPherson CountyLeola8918732,4111,137 sq mi (2,945 km2)
46Meade CountySturgis93188929,8523,471 sq mi (8,990 km2)
47Mellette CountyWhite River9519091,9181,307 sq mi (3,385 km2)
48Miner CountyHoward9718732,298570 sq mi (1,476 km2)
49Minnehaha CountySioux Falls991862197,214809 sq mi (2,095 km2)
50Moody CountyFlandreau10118736,336520 sq mi (1,347 km2)
51Oglala Lakota County-102187513,6722,094 sq mi (5,423 km2)
52Pennington CountyRapid City1031875109,2222,776 sq mi (7,190 km2)
53Perkins CountyBison10519092,8352,872 sq mi (7,438 km2)
54Potter CountyGettysburg10718752,472866 sq mi (2,243 km2)
55Roberts CountySisseton109188310,2801,101 sq mi (2,852 km2)
56Sanborn CountyWoonsocket11118832,330569 sq mi (1,474 km2)
57Spink CountyRedfield11518736,3611,504 sq mi (3,895 km2)
58Stanley CountyFort Pierre11718732,9801,443 sq mi (3,737 km2)
59Sully CountyOnida11918731,4461,007 sq mi (2,608 km2)
60Todd County-12119099,3191,388 sq mi (3,595 km2)
61Tripp CountyWinner12318735,6241,614 sq mi (4,180 km2)
62Turner CountyParker12518718,673617 sq mi (1,598 km2)
63Union CountyElk Point127186216,811460 sq mi (1,191 km2)
64Walworth CountySelby12918735,315708 sq mi (1,834 km2)
65Yankton CountyYankton135186223,310522 sq mi (1,352 km2)
66Ziebach CountyDupree13719112,4131,962 sq mi (5,082 km2)


South Dakota County Facts

ContinentNorth America
CountryUnited States
StateSouth Dakota
Total Counties66
GovernmentCounty government
Largest CitySioux Falls
SubdivisionsCities, towns, unincorporated communities
Total Area77,116 sq mi (199,729 sq km)
Population886,667 (2020 Census)
Largest County (Area)Meade County (3,482 sq mi)
Smallest County (Area)Clay County (417 sq mi)
Most Populous CountyMinnehaha County (Population: 197,214 as per 2020 Census)
Least Populous CountyJones County (Population: 917 as per 2020 Census)
Highest PointBlack Elk Peak – 7,244 ft (2,208 m)
Lowest PointBig Stone Lake – 966 ft (294 m)
Major RiversMissouri River, James River, Big Sioux River, Cheyenne River, White River
Important HighwaysInterstate 90, I-29, US Route 12, US Route 14, US Route 83
Time ZoneCentral Time Zone (UTC -6 / UTC -5 DST), Mountain Time Zone (UTC -7 / UTC -6 DST)
Postal AbbreviationSD
FIPS Code46
Famous ForMount Rushmore, Badlands, Black Hills, and wide open plains
Major CountiesMinnehaha, Pennington, Lincoln, Brown, Brookings
Top AttractionsMount Rushmore, Badlands National Park, Black Hills, Custer State Park, Crazy Horse Memorial
Official Websitesd.gov

20 Largest Cities in South Dakota by Population

Rank City County Population Latitude / Longitude
1Sioux FallsMinnehaha County, Lincoln County192,517 (2020 Census)43.5446, -96.7311
2Rapid CityPennington County74,70344.0805, -103.2310
3AberdeenBrown County28,49545.4647, -98.4865
4BrookingsBrookings County23,37744.3114, -96.7984
5WatertownCodington County22,65544.8994, -97.1151
6MitchellDavison County15,66043.7094, -98.0298
7YanktonYankton County15,41142.8711, -97.3973
8HuronBeadle County14,26344.3633, -98.2143
9PierreHughes County14,09144.3683, -100.3510
10SpearfishLawrence County12,19344.4908, -103.8594
11Box ElderPennington County, Meade County11,74644.1125, -103.0688
12VermillionClay County11,69542.7794, -96.9292
13BrandonMinnehaha County11,04843.5947, -96.5717
14SturgisMeade County7,02044.4097, -103.5091
15HarrisburgLincoln County6,73243.4314, -96.6975
16MadisonLake County6,19144.0061, -97.1131
17Belle FourcheButte County5,61744.6714, -103.8521
18TeaLincoln County5,59843.4464, -96.8359
19Dell RapidsMinnehaha County3,99643.8233, -96.7120
20MilbankGrant County3,54445.2191, -96.6359

Frequently Asked Questions About South Dakota Counties

How many counties are there in South Dakota?

South Dakota is divided into 66 counties. These counties help manage local services, public records, courts, roads, and other community functions across the state.

Which is the largest county in South Dakota?

Meade County is the largest county in South Dakota by land area. It covers about 3,471 square miles (8,990 square kilometers) and stretches across a large part of western South Dakota near the Black Hills region.

What is the most populated county in South Dakota?

Minnehaha County is the most populated county in South Dakota. It includes Sioux Falls, the state’s largest city, and recorded a population of more than 197,000 people in the 2020 Census.

What are the major cities in South Dakota counties?

Some of the major cities in South Dakota include Sioux Falls, Rapid City, Aberdeen, Brookings, Watertown, Mitchell, Pierre, and Yankton.

Which South Dakota counties are best known for tourism?

Pennington County, Lawrence County, Custer County, and Fall River County are among the most visited parts of South Dakota because of attractions such as Mount Rushmore, the Black Hills, Badlands National Park, and scenic drives.

What does a county seat mean in South Dakota?

A county seat is the main administrative center of a county. This is usually where the courthouse, county offices, and many public services are located.

US Counties Map by State

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