Below is a list of Silt CO zip codes. For your research we have also included Silt Area Code, Time Zone, UTC and the local Garfield County FIPS Code. Each Silt Colorado zip code has a center Longitude / Latitude point (the Silt center is -107.64600372314 / 39.535499572754). For your convenience we have also indicated if that zip code in Silt observes Daylight Savings time.