Below is a list of Concrete WA zip codes. For your research we have also included Concrete Area Code, Time Zone, UTC and the local Skagit County FIPS Code. Each Concrete Washington zip code has a center Longitude / Latitude point (the Concrete center is -121.75 / 48.537998199463). For your convenience we have also indicated if that zip code in Concrete observes Daylight Savings time.