Buying a home in Castleton, Illinois does not have to be difficult - Homes.com makes home buying a breeze. With 0 homes for sale in Castleton, Illinois, you can search by price, bedrooms, neighborhood, and even by property type. Search Castleton homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Castleton school data, neighborhood information, find Castleton real estate agents, and research home values in Castleton, IL. Homes.com has everything you need but the house keys.