Columbia County, Oregon ZIP Codes

8 ZIP Codes

Zip Code
City
Population ↓
97051Saint Helens17,347
97056Scappoose12,795
97048Rainier7,099
97016Clatskanie6,573
97064Vernonia3,855
97053Warren3,634
97018Columbia City2,006
97054Deer Island1,494

Overview of ZIP Codes in Columbia County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
8
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 8 ZCTAs in Columbia County, Oregon (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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