Brown County is in Western Illinois. Of the 102 counties in the Prairie State, Brown County ranks 91st in terms of size (307 square miles). Recent listings of undeveloped land for sale in Illinois's Brown County totals almost 1,000 acres and a combined market value of nearly $900,000. The most common type of land for sale by combined acreage in Brown County is undeveloped land. The average price of undeveloped acreage for sale in Brown County was $115,398. Some suggested uses for undeveloped land currently for sale in Brown County include for commercial, hunting/fishing, and agriculture use. Some common wildlife species to be found on undeveloped land for sale in Brown County include whitetail deer, turkey, deer, ducks, dove, quail and waterfowl. Current commercial applications for commercial property for sale in Brown County include for commercial, hunting/fishing and agriculture use. Browse all Illinois undeveloped land for sale on the Land Network to find your next commercial property or land investment.