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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Washington ZIP Codes

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

State ZIP Code City County Area Codes
WA 98282 Camano Island Island County 360, 564
WA 98283 Rockport Skagit County 236, 360, 509, 564, 604, 672, 778
WA 98284 Sedro Woolley Skagit County 360, 564
WA 98286 Shaw Island San Juan County 360, 564
WA 98287 Silvana Snohomish County 360, 564
WA 98288 Skykomish King County 360, 425, 509, 564
WA 98290 Snohomish Snohomish County 360, 425, 564
WA 98291 Snohomish Snohomish County 360
WA 98292 Stanwood Snohomish County 360, 564
WA 98293 Startup Snohomish 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.