Below is a list of Union Gap WA zip codes. For your research we have also included Union Gap Area Code, Time Zone, UTC and the local Yakima County FIPS Code. Each Union Gap Washington zip code has a center Longitude / Latitude point (the Union Gap center is -120.47499847412 / 46.557399749756). For your convenience we have also indicated if that zip code in Union Gap observes Daylight Savings time.