Custer County, South Dakota
Custer County, South Dakota, has 9,431 residents (July 2025 estimate). Its county seat is Custer. It uses Mountain Time and covers 1,557 sq mi (4,032 km²) of land.
- Resident population, July 2025
- 9,431
- Land area
- 1,557 sq mi (4,032 km²)
- County seat or government
- Custer
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $84,112 ± $3,932
- Median home value
- $372,100 ± $47,295
- Median rent, with utilities
- $1,112 ± $219
- Homes lived in by their owners
- 85.6% ± 2.2 points
- County type
- County
- Metro or micro area
- Rapid City, SD metro areaOutlying county
- Water area
- 2.12 sq mi (5.49 km²)
- State
- South Dakota
- County code (FIPS)
- 46033
- Coordinates (central point)
- 43.684943, -103.462250
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 Custer County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Mountain TimeAmerica/Denver | UTC-07:00 in January; UTC-06:00 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
- 577475,839 people
- 577305,596 people
- 827015,459 people
- 577442,421 people
- 577351,727 people
- 57751893 people
- 57738356 people
- 57773206 people
- 57722177 people
9 ZIP Code areas overlap Custer 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 Custer County, largest first
- Custer School District 16-18,644 people
- Hot Springs School District 23-25,595 people
- Elk Mountain School District 16-2355 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.
- Custer, South Dakota (city)2,341 people
- Hermosa, South Dakota (town)353 people
- Pringle, South Dakota (town)206 people
- Buffalo Gap, South Dakota (town)131 people
- Fairburn, South Dakota (town)61 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Fall River County, South Dakota32 mi south
- Pennington County, South Dakota39 mi northeast
- Oglala Lakota County, South Dakota51 mi southeast
- Weston County, Wyoming56 mi west
- Niobrara County, Wyoming66 mi southwest
Before using this answer on a form
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