Below is a list of Buchanan MI zip codes. For your research we have also included Buchanan Area Code, Time Zone, UTC and the local Berrien County FIPS Code. Each Buchanan Michigan zip code has a center Longitude / Latitude point (the Buchanan center is -86.36499786377 / 41.831199645996). For your convenience we have also indicated if that zip code in Buchanan observes Daylight Savings time.