Below is a list of Columbus City IA zip codes. For your research we have also included Columbus City Area Code, Time Zone, UTC and the local Louisa County FIPS Code. Each Columbus City Iowa zip code has a center Longitude / Latitude point (the Columbus City center is -91.370597839355 / 41.258701324463). For your convenience we have also indicated if that zip code in Columbus City observes Daylight Savings time.