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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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Kitsap County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Kitsap County.

County State ZIP Code City Area Codes
Kitsap County WA 98380 Seabeck 360, 564
Kitsap County WA 98383 Silverdale 360, 564
Kitsap County WA 98384 South Colby 360, 564
Kitsap County WA 98386 Southworth 360, 564
Kitsap County WA 98392 Suquamish 206, 360, 564
Kitsap County WA 98393 Tracyton 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.