Below is a list of Greenbank WA zip codes. For your research we have also included Greenbank Area Code, Time Zone, UTC and the local Island County FIPS Code. Each Greenbank Washington zip code has a center Longitude / Latitude point (the Greenbank center is -122.57299804688 / 48.097900390625). For your convenience we have also indicated if that zip code in Greenbank observes Daylight Savings time.