Lummi Island, WA is a city located in Whatcom County, Washington and has a land area of 9.25 square miles (23.96 km2). The water area for the city is 23.70 square miles or 61.38 km2. There is one unique zip code in Lummi Island, Washington and it is 98262. The area code(s) for Lummi Island is 360/564.
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