Custer County is in Black Hills & Badlands South Dakota. Of the 66 counties in the Coyote State, Custer County is 16th in terms of its size (1,559 square miles). A recent survey of Land Network data totals about 1,000 acres of farms for sale in South Dakota's Custer County, which is valued at a combined $7 million. The average price of farmland for sale in Custer County was $1 million. Farms for sale in Custer County support livestock including horses, cattle, goats, pig and sheep. 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 business or individual needs.