Land for sale in Jackson County, Minnesota, recently totaled nearly $7 million and nearly 1,000 acres. Jackson County ranks 71st in the North Star State for the combined amount of land currently advertised for sale. Heron Lake featured the most land for sale. Agriculture and farming drives the Jackson County economy, with 826 farms recorded in the county during the U.S. Census in 2012. Farming activities in Jackson County generate annual revenues of $12 million, most of which is from crops. Jackson County is the 43rd biggest county (719 square miles) in Minnesota. It's located in the Southern Minnesota region of Minnesota.