Sully County, South Dakota
county in South Dakota, United States
Sully County is a county located in the U.S. state of South Dakota. As of the 2020 census, 1,446 people lived there.[1] Its county seat is Onida. It was created in 1873.
References
change- ↑ "QuickFacts: Sully County, South Dakota". United States Census Bureau. Retrieved August 18, 2023.