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 98538 Curtis Lewis County 360, 564
WA 98539 Doty Lewis County 360, 564
WA 98540 East Olympia Thurston County 360
WA 98541 Elma Grays Harbor County 360, 564
WA 98542 Ethel Lewis County 360, 564
WA 98544 Galvin Lewis County 360, 564
WA 98546 Grapeview Mason County 253, 360, 564
WA 98547 Grayland Grays Harbor County 360, 564
WA 98548 Hoodsport Mason County 360, 564
WA 98550 Hoquiam Grays Harbor 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.