Below is a list of Chinook MT zip codes. For your research we have also included Chinook Area Code, Time Zone, UTC and the local Blaine County FIPS Code. Each Chinook Montana zip code has a center Longitude / Latitude point (the Chinook center is -109.23000335693 / 48.594799041748). For your convenience we have also indicated if that zip code in Chinook observes Daylight Savings time.