Jefferson County ZIP Codes
Montana, United States · 6 codes
Jefferson County in Montana has 6 ZIP codes, from 59631 to 59759, serving 6 places.
ZIP codes in Jefferson
Frequently asked questions
What is the ZIP code of Jefferson?
Jefferson has 6 ZIP codes, from 59631 to 59759. The table lists the places each one serves.
How many places are listed in Jefferson County?
6 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.