Below is a list of Dallam County TX zip codes. For your research we have also included Dallam County Area Code, Time Zone, UTC and the local County FIPS Code. Each Dallam County Texas zip code has a center Longitude / Latitude point (the Dallam County center is -102.59400177002 / 36.30899810791). For your convenience we have also indicated if that zip code in Dallam County observes Daylight Savings time.