what is the luling zip code
- Zip Code 78648 is located in the state of Texas in the Austin metro area. Zip code 78648 is primarily located in Caldwell County. Portions of 78648 are also located in Guadalupe County. The official US Postal Service name for 78648 is LULING, Texas. Portions of zip code 78648 are contained within or border the city limits of Luling, TX, . Zip code 78648 is within area code 830 and area code 512. 78648 can be classified socioeconically as a Lower Middle Class class zipcode in comparison to other zipcodes in Texas.