Gann Valley
Census-designated place in South Dakota
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. Wikipedia
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Gann Valley is a city located in Brule County and Buffalo County South Dakota. Gann Valley has a 2024 population of 12. Gann Valley is currently declining at a ...