Colonia Real Estate Info0 homes for sale in Colonia, NJ. Find Colonia real estate agents, and Colonia house values. Get access to Colonia listings, top Colonia REALTORS, new homes and foreclosures. Our free real estate services feature all Colonia and nearby towns. We also have information on mortgages, insurance, movers and other services for anyone looking to buy or sell a home in Colonia.