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Where am ILOCATED

Marshall County, South Dakota

Marshall County, South Dakota, has 4,426 residents (July 2025 estimate). Its county seat is Britton. It uses Central Time and covers 838 sq mi (2,171 km²) of land.

Sioux FallsRapid CityAberdeen
Marshall County in South Dakota
BrittonLangfordVeblenEdenSunset Colony
Marshall County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
4,426
Land area
838 sq mi (2,171 km²)
County seat or government
Britton
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$78,156 ± $10,504
Median home value
$156,500 ± $31,245
Median rent, with utilities
$752 ± $61
Homes lived in by their owners
80.3% ± 1.7 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Aberdeen, SD micro area and Wahpeton, ND-MN micro area
Water area
48.1 sq mi (125 km²)
State
South Dakota
County code (FIPS)
46091
Coordinates (central point)
45.737044, -97.580870
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Marshall County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 572625,100 people
  2. 574301,828 people
  3. 580531,409 people
  4. 57270764 people
  5. 57454732 people
  6. 57232651 people
  7. 57432507 people
  8. 57247211 people
  9. 58043168 people
  10. 5742175 people

10 ZIP Code areas overlap Marshall County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Marshall County, largest first

  1. Miller Township334 people
  2. Eden Township187 people
  3. Buffalo Township164 people
  4. Red Iron Lake Township142 people
  5. Stena Township137 people
  6. Veblen Township136 people
  7. Sisseton Township122 people
  8. Pleasant Valley Township89 people
  9. Lowell Township86 people
  10. Lake Township83 people
  11. McKinley Township79 people
  12. Fort Township75 people
All 25
  1. Newark Township61 people
  2. Weston Township60 people
  3. La Belle Township59 people
  4. Waverly Township59 people
  5. Newport Township58 people
  6. Victor Township52 people
  7. Hickman Township38 people
  8. Nordland Township36 people
  9. Wismer Township34 people
  10. Hamilton Township26 people
  11. Dayton Township21 people
  12. Dumarce Township13 people
  13. White Township8 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county

School districts in Marshall County, largest first

  1. Sisseton School District 54-27,604 people
  2. Groton Area School District 06-63,664 people
  3. Webster School District 18-53,458 people
  4. Britton-Hecla School District 45-42,899 people
  5. Langford School District 45-51,785 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Tribal areas in Marshall County, largest first

  1. Lake Traverse Reservation and Off-Reservation Trust Land11,084 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Britton, South Dakota (city)988 people
  2. Langford, South Dakota (town)481 people
  3. Veblen, South Dakota (city)455 people
  4. Eden, South Dakota (town)221 people
  5. Sunset Colony, South Dakota (CDP)68 people
  6. Clear Lake, South Dakota (CDP)41 people
  7. Lake City, South Dakota (town)40 people
  8. Kidder, South Dakota (CDP)8 people
  9. Newport Colony, South Dakota (CDP)0 people
  10. Westwood Colony, South Dakota (CDP)0 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Sargent County, North Dakota26 mi north
  2. Day County, South Dakota26 mi south
  3. Roberts County, South Dakota32 mi east
  4. Brown County, South Dakota39 mi west
  5. Richland County, North Dakota48 mi northeast

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.