The value of all farmsand rural real estate for sale in Illinois's Henderson County recently was approximately $2 million, representing a combined 590 acres of land for sale in Henderson County. Henderson County ranks 97th out of 102 counties in Illinois for the total acreage of land currently advertised for sale. Of all farms, rural land, hunting land and other land for sale in Henderson County, Oquawka had the most land for sale. Its economy is defined as agricultural, with 396 farms recorded in the county during the most recent U.S. Census. Farming activities in Henderson County generate annual revenues of $7 million, most of which is from crops. Henderson County is Illinois's 76th largest county (395 square miles). It's located in the Western Illinois region of Illinois.