San Juan County, Washington ZIP Codes

9 ZIP Codes

Zip Code
City
Population ↓
98250Friday Harbor9,254
98245Eastsound4,265
98261Lopez Island2,984
98279Olga680
98280Orcas442
98243Deer Harbor327
98286Shaw Island155
98222Blakely Island121
98297Waldron47

Overview of ZIP Codes in San Juan 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.
9
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 9 ZCTAs in San Juan County, Washington (US Census).

Sources

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

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