Below is a list of Galveston County TX zip codes. For your research we have also included Galveston County Area Code, Time Zone, UTC and the local County FIPS Code. Each Galveston County Texas zip code has a center Longitude / Latitude point (the Galveston County center is -94.933898925781 / 29.410600662231). For your convenience we have also indicated if that zip code in Galveston County observes Daylight Savings time.