Below is a list of Duvall WA zip codes. For your research we have also included Duvall Area Code, Time Zone, UTC and the local King County FIPS Code. Each Duvall Washington zip code has a center Longitude / Latitude point (the Duvall center is -121.98600006104 / 47.743000030518). For your convenience we have also indicated if that zip code in Duvall observes Daylight Savings time.