There was a total of around $20 million of farms, rural land, hunting land and other land for sale in Macon County, Illinois, recently on Land.com. The total of all Macon County land and rural real estate for sale was 1,000 acres. Macon County ranks 28th out of 102 counties in the Inland Empire for the total acreage of land currently advertised for sale. Decatur had the most land for sale. Manufacturing and related services are the largest economic sectors in Macon County. Macon County is the 40th biggest county (585 square miles) in Illinois. It's located in the Central Illinois region of the state.