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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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San Juan County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in San Juan County.

County State ZIP Code City Area Codes
San Juan County WA 98261 Lopez Island 360, 564
San Juan County WA 98279 Olga 360, 564
San Juan County WA 98280 Orcas 360, 564
San Juan County WA 98286 Shaw Island 360, 564
San Juan County WA 98297 Waldron 360, 564
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.