Below is a list of Roscommon County MI zip codes. For your research we have also included Roscommon County Area Code, Time Zone, UTC and the local County FIPS Code. Each Roscommon County Michigan zip code has a center Longitude / Latitude point (the Roscommon County center is -84.671096801758 / 44.370800018311). For your convenience we have also indicated if that zip code in Roscommon County observes Daylight Savings time.