Fayette County is in Central Illinois. Of the 102 counties in the Prairie State, 725-square-mile Fayette County ranks 22nd by size. Recent listings of residential land for sale in Illinois's Fayette County totals roughly 1,000 acres and a combined market value of about $4 million. The most common type of land for sale by combined acreage in Fayette County is house. The average price of residential acreage for sale in Fayette County was $225,218. 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.