Montana Gazetteer > Montana ZIP Codes > County ZIP Codes > Jefferson ZIP Codes

Also see: ZIP Codes in Jefferson with Associated Cities & Towns

ZIP Codes in Jefferson County with Associated Cities & Towns

Basin   59631
Boulder   59632
Cardwell   59721
 Clancy   59634
Jefferson City   59638
Jefferson Cty   59638
 Montana City   59634
Whitehall   59759

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.