Buying a home in McDonough County, Illinois doesn't have to be difficult - Homes.com makes home buying a breeze. With 224 homes for sale in McDonough County, Illinois, you can search by price, bedrooms, neighborhood, and even by property type. Search McDonough County homes for sale, foreclosures, MLS listings, and more. Make an informed decision with McDonough County school data, neighborhood information, find McDonough County real estate agents, and research home values in McDonough County, IL. Homes.com has everything you need but the house keys.