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.

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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 98526 Amanda Park Grays Harbor County 360, 564
WA 98527 Bay Center Pacific County 360, 564
WA 98528 Belfair Mason County 253, 360, 564
WA 98530 Bucoda Thurston County 360, 564
WA 98531 Centralia Lewis County 360, 564
WA 98532 Chehalis Lewis County 360, 564
WA 98533 Cinebar Lewis County 360, 564
WA 98535 Copalis Beach Grays Harbor County 360, 564
WA 98536 Copalis Crossing Grays Harbor County 360, 564
WA 98537 Cosmopolis 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.