Below is a list of Weld County CO zip codes. For your research we have also included Weld County Area Code, Time Zone, UTC and the local County FIPS Code. Each Weld County Colorado zip code has a center Longitude / Latitude point (the Weld County center is -104.66699981689 / 40.405700683594). For your convenience we have also indicated if that zip code in Weld County observes Daylight Savings time.