A total of around 2,000 acres were listed for sale in South Dakota's Gregory County recently, representing a combined almost $7 million in Gregory County farms, ranches, hunting land and other land for sale. Gregory County ranks 47th out of 66 counties in the state for the total acreage of land currently advertised for sale. Gregory had the most land for sale. Its economy is defined as agricultural, with 505 farms recorded in the county during the most recent U.S. Census. Farming activities in Gregory County generate annual revenues of $14 million, the majority of which comes from livestock products. Gregory County is the 30th largest county (1,053 square miles) in South Dakota. It's located in the Great Lakes South Dakota region of the state.