Below is a list of Middleton MI zip codes. For your research we have also included Middleton Area Code, Time Zone, UTC and the local Gratiot County FIPS Code. Each Middleton Michigan zip code has a center Longitude / Latitude point (the Middleton center is -84.708801269531 / 43.183700561523). For your convenience we have also indicated if that zip code in Middleton observes Daylight Savings time.