Fall River County, South Dakota
Fall River County, South Dakota, has 7,467 residents (July 2025 estimate). Its county seat is Hot Springs. It uses Mountain Time and covers 1,740 sq mi (4,506 km²) of land.
- Resident population, July 2025
- 7,467
- Land area
- 1,740 sq mi (4,506 km²)
- County seat or government
- Hot Springs
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $67,917 ± $7,389
- Median home value
- $193,200 ± $18,936
- Median rent, with utilities
- $931 ± $137
- Homes lived in by their owners
- 72.4% ± 4.8 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Rapid City, SD metro area
- Water area
- 9.27 sq mi (24 km²)
- State
- South Dakota
- County code (FIPS)
- 46047
- Coordinates (central point)
- 43.221619, -103.512609
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 Fall River 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
- 693376,466 people
- 577475,839 people
- 577351,727 people
- 57763356 people
- 57722177 people
- 57766176 people
- 5778258 people
7 ZIP Code areas overlap Fall River 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
Fall River County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Fall River County, largest first
- Argentine Township58 people
- Provo Township5 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county
School districts in Fall River County, largest first
- Hot Springs School District 23-25,595 people
- Edgemont School District 23-11,390 people
- Oelrichs School District 23-3481 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.
- Hot Springs, South Dakota (city)3,548 people
- Edgemont, South Dakota (city)860 people
- Oelrichs, South Dakota (town)198 people
- Angostura, South Dakota (CDP)144 people
- Maverick Junction, South Dakota (CDP)123 people
- Oral, South Dakota (CDP)55 people
- Smithwick, South Dakota (CDP)25 people
- Dudley, South Dakota (CDP)8 people
- Ardmore, South Dakota (CDP)5 people
- Provo, South Dakota (CDP)0 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Custer County, South Dakota32 mi north
- Dawes County, Nebraska40 mi southeast
- Oglala Lakota County, South Dakota48 mi east
- Niobrara County, Wyoming49 mi west
- Sioux County, Nebraska53 mi south
Before using this answer on a form
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