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 98383 Silverdale Kitsap County 360, 564
WA 98384 South Colby Kitsap County 360, 564
WA 98385 South Prairie Pierce County 360, 564
WA 98386 Southworth Kitsap County 360, 564
WA 98387 Spanaway Pierce County 253
WA 98388 Steilacoom Pierce County 253
WA 98390 Sumner Pierce County 253
WA 98391 Bonney Lake Pierce County 253, 360, 564
WA 98392 Suquamish Kitsap County 206, 360, 564
WA 98393 Tracyton Kitsap County 360
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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.