The combined value of farms, ranches, and rural real estate for sale in South Dakota's Sully County recently on Land.com was around $186 million. This represents nearly 100,000 acres of land for sale in Sully County. Sully County ranks 47th in the Coyote State based on the total acres of land for sale among all the counties in the Mount Rushmore State. Of all locations in Sully County with farms and ranches for sale, Pierre featured the most land for sale. Its economy is defined as agricultural, with 191 farms recorded in the county during the most recent U.S. Census. Farming activities in Sully County generate annual revenues of $7 million, most of which is from crops. Sully County is South Dakota's 29th biggest county (1,070 square miles). It's located in the Great Lakes South Dakota region of the state.