Below is a list of Iosco County MI zip codes. For your research we have also included Iosco County Area Code, Time Zone, UTC and the local County FIPS Code. Each Iosco County Michigan zip code has a center Longitude / Latitude point (the Iosco County center is -83.640098571777 / 44.333400726318). For your convenience we have also indicated if that zip code in Iosco County observes Daylight Savings time.