Zip Code 78646 is located in Leander between Georgetown and Cedar Park in the Greater Austin area. Find information on the community and real estate services available to home buyers and sellers in the Leander, TX 78646 area. Search real estate listings and view homes for sale in zip code 78646 in Leander, Texas. For more info about any of these 78646 real estate listings, click the "Request More Information" button located on the detail page of each property. And, register for a free account to automatically receive email alerts whenever new listings hit the 78646 market that match your specific search criteria.