Below is a list of Sunnyside WA zip codes. For your research we have also included Sunnyside Area Code, Time Zone, UTC and the local Yakima County FIPS Code. Each Sunnyside Washington zip code has a center Longitude / Latitude point (the Sunnyside center is -120.0059967041 / 46.316501617432). For your convenience we have also indicated if that zip code in Sunnyside observes Daylight Savings time.