Lee County is in Northern Illinois. Of the 102 counties in the Land of Lincoln, Lee County is 21st in terms of its size (728 square miles). Recent listings of residential land and property for sale in Illinois's Lee County totals 1,000 acres and a combined market value of roughly $10 million. The most common type of land for sale by combined acreage in Lee County is homesite. The average price of residential land for sale in Lee County was $517,740. 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.