Below is a list of Crystal City TX zip codes. For your research we have also included Crystal City Area Code, Time Zone, UTC and the local Zavala County FIPS Code. Each Crystal City Texas zip code has a center Longitude / Latitude point (the Crystal City center is -99.824996948242 / 28.690799713135). For your convenience we have also indicated if that zip code in Crystal City observes Daylight Savings time.