Land for sale in South Dakota's Campbell County recently totaled nearly $10 million and almost 1,000 acres. Campbell County ranks 32nd in South Dakota for the total acreage of land currently advertised for sale. Among cities in Campbell County with ranches, farms, hunting land and other rural land and acreage for sale, Pollock had the most land for sale. Campbell County has a large agricultural economy, with 242 farms recorded in the county during the latest U.S. Census. Farming activities in Campbell County generate annual revenues of $4 million, most of which is from crops. Campbell County is the 44th largest county (770 square miles) in South Dakota. It's located in the Great Lakes South Dakota region of the state.