Clark County is in Central Illinois. Of the 102 counties in the Inland Empire, Clark County ranks 54th in terms of size (504 square miles). Recent Land Network data includes 1,000 acres of residential land and property for sale in Illinois's Clark County, which is valued at a combined $3 million. The average price of residential acreage for sale in Clark County was $241,841. 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.