Below is a list of Oyens IA zip codes. For your research we have also included Oyens Area Code, Time Zone, UTC and the local Plymouth County FIPS Code. Each Oyens Iowa zip code has a center Longitude / Latitude point (the Oyens center is -96.055999755859 / 42.819900512695). For your convenience we have also indicated if that zip code in Oyens observes Daylight Savings time.