Buying a home in Harrisburg, Illinois does not have to be difficult - Homes.com makes home buying a breeze. With 88 homes for sale in Harrisburg, Illinois, you can search by price, bedrooms, neighborhood, and even by property type. Search Harrisburg homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Harrisburg school data, neighborhood information, find Harrisburg real estate agents, and research home values in Harrisburg, IL. Homes.com has everything you need but the house keys.