Below is a list of Onaway MI zip codes. For your research we have also included Onaway Area Code, Time Zone, UTC and the local Presque Isle County FIPS Code. Each Onaway Michigan zip code has a center Longitude / Latitude point (the Onaway center is -84.228797912598 / 45.357601165771). For your convenience we have also indicated if that zip code in Onaway observes Daylight Savings time.