Menard County is in Central Illinois. Of the 102 counties in the Prairie State, Menard County is 90th in terms of its size (315 square miles). The total value of roughly 1,000 acres of residential land recently listed for sale in Menard County, Illinois, was approximately $5 million. The average price of residential land for sale in Menard County was $337,025. The economy here is mainly agricultural. Browse all residential land and rural property for sale in Illinois to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.