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Ziebach County is a county located in the state of South Dakota. Based on the 2010 census, the population was 2,801. Its county seat is Dupree. It is the last county in the United States alphabetically.
Ziebach is named for local leader Frank M. Ziebach.
County QuickFacts: CensusBureau Quick Facts
Ziebach County, created and organized in 1911, was named for Frank M. Ziebach. He established the Weekly Dakotan, was appointed captain of the militia during the Indian outbreak of 1862 and was popularly called "Governor" Ziebach. Governor Vessey signed the bill creating Ziebach County on February 1, 1911 and authorized a special election to be held April 4th to choose county officers and the location of the county seat. Dupree was elected as county seat by nearly a unanimous vote.
As reported by the Census Bureau, the county has a total area of 1,971 square miles (5,105 km2), of which,
1,962 square miles (5,082 km2) of it is land and 9 square miles (23 km2) of it (0.44%) is water. Almost the entire
county lies within the Cheyenne River Indian Reservation. The balance of the county, along its extreme northern
county line, lies within the Standing Rock Indian Reservation. It is one of five South Dakota counties that lie
entirely on Indian reservations.
Bordering counties are as follows: