Land for sale in Minnesota's Big Stone County recently totaled almost $9 million and almost 1,000 acres. Big Stone County ranks 71st in the North Star State for the combined amount of land currently advertised for sale. Among cities in Big Stone County with land and rural real estate for sale, Ortonville had the most land for sale. Agriculture and farming drives the Big Stone County economy, with 400 farms recorded in the county during the U.S. Census in 2012. Farming activities in Big Stone County generate annual revenues of $8 million, most of which is from crops. Big Stone County is the 67th largest county (528 square miles) in Minnesota. It's located in the Southern Minnesota region of Minnesota.