Zip Code 78642 is located in Liberty Hill near Georgetown and Leander. Search Texas homes for sale in the 78642 zip code area. Find information on the community and real estate services available to home buyers and sellers in the Greater Austin, TX 78642 area. Search real estate listings and view homes for sale in zip code 78642 Liberty Hill, Texas. For more info about any of these 78642 real estate listings, click the "Request More Information" button located on the detail page of each property.