Below is a list of Hermiston OR zip codes. For your research we have also included Hermiston Area Code, Time Zone, UTC and the local Umatilla County FIPS Code. Each Hermiston Oregon zip code has a center Longitude / Latitude point (the Hermiston center is -119.29199981689 / 45.841499328613). For your convenience we have also indicated if that zip code in Hermiston observes Daylight Savings time.