There was a total of $11 million of ranches, farms, hunting land and other rural land and acreage for sale in Gregory County recently on Land.com. The total acreage of all Gregory County farms, ranches, hunting land and other land for sale was 3,000 acres. Gregory County ranks 30th out of 66 counties in South Dakota for the total number of acres of land currently advertised for sale. Of all locations in Gregory County with farms, ranches, hunting land and other land for sale, Gregory had the most land for sale. Agriculture and farming drives the Gregory County economy, with 505 farms recorded in the county during the U.S. Census in 2012. 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 South Dakota.