There was a combined around $4 million of farms, hunting land and other rural land and acreage for sale in Illinois's Mason County recently on Land.com. The total acreage of all Mason County farms, hunting land and other rural land and acreage for sale was 1,000 acres. Mason County ranks 83rd out of 102 counties in the Prairie State for the total acreage of land currently advertised for sale. Of all farms and rural land for sale in Mason County, Chandlerville had the most land for sale. Mason County is the 47th biggest county (563 square miles) in Illinois. It's located in the Western Illinois region of Illinois.