Custer County is in Black Hills & Badlands South Dakota. Of the 66 counties in the Mount Rushmore State, Custer County ranks 16th in terms of size (997,800 acres). Recent Land Network data shows approximately 1,000 acres of farms for sale in South Dakota's Custer County, which is valued at a combined $6 million. The average price of farmland for sale in Custer County was $1 million. Farms for sale in Custer County sustain livestock including cattle, horses and goats. Browse all South Dakota farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future commercial or lifestyle needs.