Below is a list of Dimmit County TX zip codes. For your research we have also included Dimmit County Area Code, Time Zone, UTC and the local County FIPS Code. Each Dimmit County Texas zip code has a center Longitude / Latitude point (the Dimmit County center is -99.704299926758 / 28.468799591064). For your convenience we have also indicated if that zip code in Dimmit County observes Daylight Savings time.