The combined value of farms, hunting land and other rural land and acreage for sale in Henderson County, Illinois, recently on Land.com was around $2 million. This represents around 1,000 acres of land for sale in Henderson County. Henderson County ranks 100th out of 102 counties in the Land of Lincoln for the combined amount of land currently advertised for sale. Of all land and rural real estate for sale in Henderson County, Oquawka featured the most land for sale. Henderson County has a large agricultural economy, with 396 farms recorded in the county during the latest U.S. Census. Farming activities in Henderson County generate annual revenues of $7 million, most of which is from crops. Henderson County is the 76th biggest county (395 square miles) in Illinois. It's located in the Western Illinois region of Illinois.