Below is a list of Marietta TX zip codes. For your research we have also included Marietta Area Code, Time Zone, UTC and the local Cass County FIPS Code. Each Marietta Texas zip code has a center Longitude / Latitude point (the Marietta center is -94.542602539062 / 33.173599243164). For your convenience we have also indicated if that zip code in Marietta observes Daylight Savings time.