Oregon Gazetteer > Oregon ZIP Codes > County ZIP Codes > Columbia ZIP Codes

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

ZIP Codes in Columbia County with Associated Cities & Towns

Birkenfeld   97016
Clatskanie   97016
Columbia City   97018
Deer Island   97054
 Rainier   97048
Saint Helens   97051
Scappoose   97056
 Vernonia   97064
Warren   97053
Westport   97016

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.