Gann Valley is a city in South Dakota. So far we have accumulated 22 streets in Gann Valley and on these streets we have added 1,788 real estate properties.
- Federal District
- South Dakota
- Gann Valley
Streets in Gann Valley
Gann Valley is an unincorporated community in, and the county seat of, Buffalo County, South Dakota, United States. The town had a population of 14 as of the 2010 census. It is the smallest unincorporated county seat in the United States. The community was founded in 1885 by Herst Gann in a valley on Crow Creek just east of the Crow Creek Reservation. Gann donated the courthouse in the community and A.L. Spencer donated 30 acres resulting in the community becoming the county seat. In 1886 the county seat was moved to Buffalo Center but was moved back to Gann in 1888. Its ZIP code is 57341. The center of population of South Dakota is located in Gann Valley. Gann Valley holds the record for the hottest temperature in South Dakota (120 °F (49 °C)).