There are 16 zip codes in Whatcom County, Washington. The most populated is 98225, located in Bellingham. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9822549,667Bellingham
9822645,703Bellingham
9822934,157Bellingham
9824827,147Ferndale
9826422,334Lynden
9823018,605Blaine
982478,468Everson
982663,983Maple Falls
982403,426Custer
982443,284Deming
982953,033Sumas
982761,564Nooksack
982811,249Point Roberts
98262965Lummi Island
98220577Acme
98283466Rockport

Zip Codes in Whatcom County, Washington by Population (2024)