Below is a list of Montcalm County MI zip codes. For your research we have also included Montcalm County Area Code, Time Zone, UTC and the local County FIPS Code. Each Montcalm County Michigan zip code has a center Longitude / Latitude point (the Montcalm County center is -85.142097473145 / 43.315898895264). For your convenience we have also indicated if that zip code in Montcalm County observes Daylight Savings time.