Below is a list of Larimer County CO zip codes. For your research we have also included Larimer County Area Code, Time Zone, UTC and the local County FIPS Code. Each Larimer County Colorado zip code has a center Longitude / Latitude point (the Larimer County center is -105.20300292969 / 40.543800354004). For your convenience we have also indicated if that zip code in Larimer County observes Daylight Savings time.