U.S. postal lookup

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.

42,735 verified records
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State directory

Washington ZIP Codes

Complete postal directory, details, and geographic map for the State of Washington.

State ZIP Code City County Area Codes
WA 98294 Sultan Snohomish County 360, 425, 564
WA 98295 Sumas Whatcom County 236, 360, 564, 604, 672, 778
WA 98296 Snohomish Snohomish County 360, 425, 564
WA 98297 Waldron San Juan County 360, 564
WA 98303 Anderson Island Pierce County 253, 360, 564
WA 98304 Ashford Pierce County 360, 509, 564
WA 98305 Beaver Clallam County 360, 564
WA 98310 Bremerton Kitsap County 206, 360, 564
WA 98311 Bremerton Kitsap County 360, 564
WA 98312 Bremerton Kitsap County 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.