Below is a list of Coulee City WA zip codes. For your research we have also included Coulee City Area Code, Time Zone, UTC and the local Grant County FIPS Code. Each Coulee City Washington zip code has a center Longitude / Latitude point (the Coulee City center is -119.28700256348 / 47.612400054932). For your convenience we have also indicated if that zip code in Coulee City observes Daylight Savings time.