Below is a list of Webster City IA zip codes. For your research we have also included Webster City Area Code, Time Zone, UTC and the local Hamilton County FIPS Code. Each Webster City Iowa zip code has a center Longitude / Latitude point (the Webster City center is -93.817100524902 / 42.462898254395). For your convenience we have also indicated if that zip code in Webster City observes Daylight Savings time.