Below is a list of Gwinn MI zip codes. For your research we have also included Gwinn Area Code, Time Zone, UTC and the local Marquette County FIPS Code. Each Gwinn Michigan zip code has a center Longitude / Latitude point (the Gwinn center is -87.445198059082 / 46.284698486328). For your convenience we have also indicated if that zip code in Gwinn observes Daylight Savings time.