Below is a list of Allegan MI zip codes. For your research we have also included Allegan Area Code, Time Zone, UTC and the local Allegan County FIPS Code. Each Allegan Michigan zip code has a center Longitude / Latitude point (the Allegan center is -85.846000671387 / 42.532299041748). For your convenience we have also indicated if that zip code in Allegan observes Daylight Savings time.