Gann Valley, South Dakota
Gann Valley | |
|---|---|
| Coordinates: 44°02′01″N 98°59′18″W / 44.03361°N 98.98833°W | |
| Country | United States |
| State | South Dakota |
| County | Buffalo |
| Founded | 1885 |
| Area | |
• Total | 0.08 sq mi (0.21 km2) |
| • Land | 0.08 sq mi (0.21 km2) |
| • Water | 0.00 sq mi (0.00 km2) |
| Elevation | 1,716 ft (523 m) |
| Population (2020) | |
• Total | 10 |
| • Density | 126.58/sq mi (48.68/km2) |
| Time zone | UTC-6 (Central (CST)) |
| • Summer (DST) | UTC-5 (CDT) |
| ZIP codes | 57341 |
| Area code | 605 |
| FIPS code | 46-23421 |
| GNIS feature ID | 2584554 |
| Website | http://www.gannvalley.com/ |
Gann Valley is a census-designated place in and the county seat of Buffalo County, South Dakota, United States. The town had a population of 10 as of the 2020 census. It is the smallest unincorporated county seat in the United States.