The combined value of ranches, farms, hunting land and other rural land and acreage for sale in Mellette County recently on Land.com was approximately $5 million. This represents 2,000 acres of farms and ranches for sale in Mellette County. Mellette County ranks 38th out of 66 counties in the Coyote State for the total acreage of land currently advertised for sale. White River had the most land for sale. Mellette County has a large agricultural economy, with 229 farms recorded in the county during the latest U.S. Census. Farming activities in Mellette County generate annual revenues of $3 million, the majority of which comes from livestock products. Mellette County is the 21st largest county (1,310 square miles) in South Dakota. It's located in the Black Hills & Badlands South Dakota region of South Dakota.