Below is a list of Mill Creek WA zip codes. For your research we have also included Mill Creek Area Code, Time Zone, UTC and the local Snohomish County FIPS Code. Each Mill Creek Washington zip code has a center Longitude / Latitude point (the Mill Creek center is -122.22100067139 / 47.855201721191). For your convenience we have also indicated if that zip code in Mill Creek observes Daylight Savings time.