Below is a list of Petroleum County MT zip codes. For your research we have also included Petroleum County Area Code, Time Zone, UTC and the local County FIPS Code. Each Petroleum County Montana zip code has a center Longitude / Latitude point (the Petroleum County center is -108.30799865723 / 47.051700592041). For your convenience we have also indicated if that zip code in Petroleum County observes Daylight Savings time.