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U.S. ZIP Codes Database 2026

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Whatcom County ZIP Codes

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

County State ZIP Code City Area Codes
Whatcom County WA 98247 Everson 360, 564
Whatcom County WA 98248 Ferndale 360, 564
Whatcom County WA 98262 Lummi Island 360, 564
Whatcom County WA 98264 Lynden 236, 360, 564, 604, 672, 778
Whatcom County WA 98266 Maple Falls 236, 360, 564, 604, 672, 778
Whatcom County WA 98276 Nooksack 360, 564
Whatcom County WA 98281 Point Roberts 236, 250, 360, 564, 604, 672, 778
Whatcom County WA 98295 Sumas 236, 360, 564, 604, 672, 778
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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.