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Columbia County, Washington ZIP Codes

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ZIP Codes in Columbia County with Associated Cities & Towns

Columbia County, WA - Standard ZIP Codes
99328 | 99347 | 99361
Columbia County, WA - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)
99359
Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.

ZIP Codes in Columbia County Address Data

  • Businesses Addresses: 393
  • PO Box Addresses: 1,118
  • Residential Addresses: 2,661
    • Multi-Family Addresses: 31
    • Single Family Addresses: 2,630

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Map of Columbia County, WA ZIP Codes With Actual (Default) City Names

Dayton
Starbuck


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