Below is a list of Dalhart TX zip codes. For your research we have also included Dalhart Area Code, Time Zone, UTC and the local Dallam County FIPS Code. Each Dalhart Texas zip code has a center Longitude / Latitude point (the Dalhart center is -102.52100372314 / 36.065200805664). For your convenience we have also indicated if that zip code in Dalhart observes Daylight Savings time.