Land for sale in South Dakota's Bennett County recently totaled $3 million and approximately 2,000 acres. Bennett County ranks 49th out of 66 counties in South Dakota for the total number of acres of land currently advertised for sale. Of all farms and ranches for sale in Bennett County, Martin featured the most land for sale. Its economy is defined as agricultural, with 219 farms recorded in the county during the most recent U.S. Census. Farming activities in Bennett County generate annual revenues of $5 million, the majority of which comes from livestock products. Bennett County is the 23rd largest county (1,190 square miles) in South Dakota. It's located in the Black Hills & Badlands South Dakota region of the state.