The value of all land for sale in Macon County, Illinois, recently was almost $20 million, representing a combined 516 acres of land for sale in Macon County. Macon County ranks 25th in the Prairie State for the total number of acres of land currently advertised for sale. Among cities in Macon County with farms, rural land, hunting land and other land for sale, Decatur featured the most land for sale. From an economic perspective, manufacturing and related services are the main sectors in Macon County. Macon County is the 40th largest county (585 square miles) in Illinois. It's located in the Central Illinois region of the state.