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, SD is home to a population of 12 people, from which 100% are citizens. As of 2022, 0% of Gann Valley, SD residents were born outside of the country ...
Find homes for sale and real estate in Gann Valley, SD at realtor.com®. Search and filter Gann Valley homes by price, beds, baths and property type.
Tornado activity: Gann Valley-area historical tornado activity is near South Dakota state average. It is 3% smaller than the overall U.S. average.