Campbell County, South Dakota
Campbell County, South Dakota, has 1,377 residents (July 2025 estimate). Its county seat is Mound City. It uses Central Time and Mountain Time and covers 734 sq mi (1,900 km²) of land.
- Resident population, July 2025
- 1,377
- Land area
- 734 sq mi (1,900 km²)
- County seat or government
- Mound City
- Time zone
- Central Time, Mountain TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $68,929 ± $20,360
- Median home value
- $115,900 ± $15,649
- Median rent, with utilities
- $760 ± $68
- Homes lived in by their owners
- 76.3% ± 4.5 points
- County type
- County
- Metro or micro area
- Outside any metro or micro area
- Water area
- 37.1 sq mi (96 km²)
- State
- South Dakota
- County code (FIPS)
- 46021
- Coordinates (central point)
- 45.785575, -100.002107
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 Campbell County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
| Mountain TimeAmerica/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Campbell County straddles a time-zone line; check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 574721,165 people
- 574371,074 people
- 57632757 people
- 57648465 people
- 57631364 people
- 57646272 people
- 57452136 people
7 ZIP Code areas overlap Campbell 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.
School districts in Campbell County, largest first
- Mobridge-Pollock School District 62-63,876 people
- Selby School District 62-51,915 people
- Eureka School District 44-11,132 people
- Herreid School District 10-1798 people
- Bowdle School District 22-1571 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.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Herreid, South Dakota (city)560 people
- Pollock, South Dakota (town)270 people
- Mound City, South Dakota (town)90 people
- Artas, South Dakota (town)3 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Walworth County, South Dakota25 mi south
- McIntosh County, North Dakota34 mi northeast
- Emmons County, North Dakota36 mi north
- McPherson County, South Dakota38 mi east
- Corson County, South Dakota57 mi west
Before using this answer on a form
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