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Where am ILOCATED

Grant County, South Dakota

Grant County, South Dakota, has 7,534 residents (July 2025 estimate). Its county seat is Milbank. It uses Central Time and covers 681 sq mi (1,765 km²) of land.

Sioux FallsRapid CityAberdeen
Grant County in South Dakota
MilbankBig Stone CityRevilloLa BoltStockholm
Grant County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
7,534
Land area
681 sq mi (1,765 km²)
County seat or government
Milbank
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$75,028 ± $9,695
Median home value
$171,000 ± $14,506
Median rent, with utilities
$763 ± $116
Homes lived in by their owners
75.6% ± 3.9 points
County type
County
Metro or micro area
Outside any metro or micro areaNext to: Watertown, SD micro area
Water area
6.09 sq mi (15.8 km²)
State
South Dakota
County code (FIPS)
46051
Coordinates (central point)
45.172637, -96.772261
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 Grant 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. 572524,883 people
  2. 572161,584 people
  3. 57266626 people
  4. 57227562 people
  5. 57259477 people
  6. 57263351 people
  7. 57256238 people
  8. 57251228 people
  9. 57265202 people
  10. 57264191 people
  11. 57269186 people
  12. 57246132 people

12 ZIP Code areas overlap Grant 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 Grant County, largest first

  1. Alban Township740 people
  2. Big Stone Township426 people
  3. Grant Center Township296 people
  4. Melrose Township286 people
  5. Vernon Township201 people
  6. Osceola Township200 people
  7. Blooming Valley Township145 people
  8. Georgia Township129 people
  9. Madison Township110 people
  10. Mazeppa Township84 people
  11. Kilborn Township76 people
  12. Stockholm Township66 people
All 17
  1. Farmington Township59 people
  2. Lura Township53 people
  3. Adams Township45 people
  4. Troy Township33 people
  5. Twin Brooks Township31 people

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

School districts in Grant County, largest first

  1. Watertown School District 14-426,696 people
  2. Milbank School District 25-46,601 people
  3. Deuel School District 19-43,303 people
  4. Wilmot School District 54-71,453 people
  5. Waubay School District 18-31,170 people
  6. Big Stone City School District 25-11,054 people
  7. Waverly School District 14-5978 people
  8. Florence School District 14-1722 people
  9. Summit School District 54-6642 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 Grant 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. Milbank, South Dakota (city)3,525 people
  2. Big Stone City, South Dakota (city)706 people
  3. Revillo, South Dakota (town)88 people
  4. La Bolt, South Dakota (town)80 people
  5. Stockholm, South Dakota (town)74 people
  6. Strandburg, South Dakota (town)58 people
  7. Twin Brooks, South Dakota (town)29 people
  8. Marvin, South Dakota (town)19 people
  9. Albee, South Dakota (town)4 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Big Stone County, Minnesota25 mi northeast
  2. Codington County, South Dakota25 mi southwest
  3. Deuel County, South Dakota29 mi south
  4. Lac qui Parle County, Minnesota31 mi east
  5. Roberts County, South Dakota32 mi north
  6. Day County, South Dakota41 mi west

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.