Below is a list of Sullivan City TX zip codes. For your research we have also included Sullivan City Area Code, Time Zone, UTC and the local Hidalgo County FIPS Code. Each Sullivan City Texas zip code has a center Longitude / Latitude point (the Sullivan City center is -98.564002990723 / 26.277599334717). For your convenience we have also indicated if that zip code in Sullivan City observes Daylight Savings time.