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ZIP Codes in Colusa County with Associated Cities & Towns

Arbuckle   95912
College City   95912
Colusa   95932
 Grimes   95950
Maxwell   95955
Princeton   95970
 Stonyford   95979
Williams   95987

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.