Whiteside County is in Northern Illinois. Of the 102 counties in the Land of Lincoln, 445,776-acre Whiteside County ranks 27th by size. There is roughly 1,000 acres of recreational land for sale in Whiteside County, Illinois, based on recent Land Network data. The combined market value of farms, hunting land and other rural land and acreage for sale here is about $1 million. The average price of recreational property for sale in Whiteside County was $425,290. Browse all recreational property for sale in Illinois to find the recreational tract that suits your lifestyle needs, from hunting and fishing properties for the outdoor enthusiast to undeveloped acreage ready for future residential-property development.