A total of approximately 100,000 acres were listed for sale in Sully County, South Dakota, recently, representing a total value of around $195 million in Sully County land and rural real estate for sale. Based on the combined acreage of land and rural property for sale here, Sully County has the most land for sale of the 66 counties in the Coyote State. Of all land for sale in Sully County, Pierre featured 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 South Dakota's 29th biggest county (1,070 square miles). It's located in the Great Lakes South Dakota region of South Dakota.