Below is a list of Big Timber MT zip codes. For your research we have also included Big Timber Area Code, Time Zone, UTC and the local Sweet Grass County FIPS Code. Each Big Timber Montana zip code has a center Longitude / Latitude point (the Big Timber center is -109.95500183105 / 45.834899902344). For your convenience we have also indicated if that zip code in Big Timber observes Daylight Savings time.