Below is a list of Holyoke CO zip codes. For your research we have also included Holyoke Area Code, Time Zone, UTC and the local Phillips County FIPS Code. Each Holyoke Colorado zip code has a center Longitude / Latitude point (the Holyoke center is -102.30200195312 / 40.585498809814). For your convenience we have also indicated if that zip code in Holyoke observes Daylight Savings time.