Below is a list of Yakima County WA zip codes. For your research we have also included Yakima County Area Code, Time Zone, UTC and the local County FIPS Code. Each Yakima County Washington zip code has a center Longitude / Latitude point (the Yakima County center is -120.46700286865 / 46.509998321533). For your convenience we have also indicated if that zip code in Yakima County observes Daylight Savings time.