Below is a list of Royal City WA zip codes. For your research we have also included Royal City Area Code, Time Zone, UTC and the local Grant County FIPS Code. Each Royal City Washington zip code has a center Longitude / Latitude point (the Royal City center is -119.63400268555 / 46.905899047852). For your convenience we have also indicated if that zip code in Royal City observes Daylight Savings time.