Below is a list of Marengo IA zip codes. For your research we have also included Marengo Area Code, Time Zone, UTC and the local Iowa County FIPS Code. Each Marengo Iowa zip code has a center Longitude / Latitude point (the Marengo center is -92.064697265625 / 41.795799255371). For your convenience we have also indicated if that zip code in Marengo observes Daylight Savings time.