Buying a home in Roundup, Montana does not have to be difficult - Homes.com makes home buying a breeze. With 123 homes for sale in Roundup, Montana, you can search by price, bedrooms, neighborhood, and even by property type. Search Roundup homes for sale, foreclosures, MLS listings, and more. Make an informed decision with Roundup school data, neighborhood information, find Roundup real estate agents, and research home values in Roundup, MT. Homes.com has everything you need but the house keys.