A total of around 1,000 acres were listed for sale in Sully County, South Dakota, recently, representing a combined approximately $10 million in Sully County farms, ranches, and rural real estate for sale. Sully County ranks 41st out of 66 counties in the Mount Rushmore State for the total number of acres of land currently advertised for sale. Pierre had the most land for sale. Agriculture and farming drives the Sully County economy, with 191 farms recorded in the county during the U.S. Census in 2012. Farming activities in Sully County generate annual revenues of $7 million, most of which is from crops. Sully County is the 29th biggest county (1,070 square miles) in South Dakota. It's located in the Great Lakes South Dakota region of South Dakota.