Below is a list of Masonville IA zip codes. For your research we have also included Masonville Area Code, Time Zone, UTC and the local Delaware County FIPS Code. Each Masonville Iowa zip code has a center Longitude / Latitude point (the Masonville center is -91.58740234375 / 42.477001190186). For your convenience we have also indicated if that zip code in Masonville observes Daylight Savings time.