Land for sale in Kansas's Marion County recently totaled almost $5 million and 1,000 acres. Marion County ranks 73rd in the Sunflower State for the total number of acres of land currently advertised for sale. Of all locations in Marion County with farms, ranches, and rural real estate for sale, Marion had the most land for sale. Its economy is defined as agricultural, with 981 farms recorded in the county during the most recent U.S. Census. Farming activities in Marion County generate annual revenues of $15 million, most of which is from crops. Marion County is the 20th biggest county (953 square miles) in Kansas. It's located in the Tallgrass Prairie Kansas region of Kansas.