Below is a list of Guernsey WY zip codes. For your research we have also included Guernsey Area Code, Time Zone, UTC and the local Platte County FIPS Code. Each Guernsey Wyoming zip code has a center Longitude / Latitude point (the Guernsey center is -104.74700164795 / 42.269798278809). For your convenience we have also indicated if that zip code in Guernsey observes Daylight Savings time.