Christie's International Real Estate Northern New Jersey has complete luxury home listings for Allentown and nearby areas, including Upper Freehold, Robbinsville et Yardville. We have 8 property listing(s) in Allentown, and 5,606 listings in all of New Jersey. Use the filters above to narrow your search for luxury homes for sale in Allentown. If you see a listing you like, click the photo to view details and connect with an agent in Allentown.