Below is a list of Tustin MI zip codes. For your research we have also included Tustin Area Code, Time Zone, UTC and the local Osceola County FIPS Code. Each Tustin Michigan zip code has a center Longitude / Latitude point (the Tustin center is -85.45890045166 / 44.102798461914). For your convenience we have also indicated if that zip code in Tustin observes Daylight Savings time.