Petroleum County ZIP Codes
Montana, United States · 2 codes
Petroleum County in Montana has 2 ZIP codes, from 59084 to 59087, serving 2 places.
ZIP codes in Petroleum
Frequently asked questions
What is the ZIP code of Petroleum?
Petroleum has 2 ZIP codes, from 59084 to 59087. The table lists the places each one serves.
How many places are listed in Petroleum County?
2 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.