The value of all farms and ranches for sale in Custer County recently was nearly $112 million, representing a total of 5,765 acres of land for sale in Custer County. Custer County ranks third in South Dakota based on the total amount of acres of land for sale of all the counties in the Coyote State. There were six properties listed as sold in Custer County through the Land Network Comparable Sales Program. This represented a total value of $4,860,750. Custer had the most land for sale. Government and state-level services are the main economic drivers in Custer County. Custer County is the 16th largest county (1,559 square miles) in South Dakota. It's located in the Black Hills & Badlands South Dakota region of the state.