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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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Snohomish County ZIP Codes

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

County State ZIP Code City Area Codes
Snohomish County WA 98291 Snohomish 360
Snohomish County WA 98292 Stanwood 360, 564
Snohomish County WA 98293 Startup 360, 564
Snohomish County WA 98294 Sultan 360, 425, 564
Snohomish County WA 98296 Snohomish 360, 425, 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.