There was a combined $2 million of ranches, farms, hunting land and other rural land and acreage for sale in Bennett County, South Dakota, recently on Land.com. The total size of all Bennett County farms, ranches, hunting land and other land for sale was 2,000 acres. Bennett County ranks 51st out of 66 counties in South Dakota for the combined amount of land currently advertised for sale. Martin had the most land for sale. Agriculture and farming drives the Bennett County economy, with 219 farms recorded in the county during the U.S. Census in 2012. Farming activities in Bennett County generate annual revenues of $5 million, the majority of which comes from livestock products. Bennett County is South Dakota's 23rd biggest county (1,190 square miles). It's located in the Black Hills & Badlands South Dakota region of South Dakota.