There are 13 US Post Offices in Whatcom County serving a total of 210,998 residents equating to 16,231 residents per post office. It's estimated that approximately 336,776 packages are handled across the 13 county post offices annually. Whatcom County /\u02c8hw\u0252tk\u0259m/ is a county located in the U.S. state of Washington. As of the 2010 census, the population was 201,140. It is bordered by Canada on the north, Okanogan County on the east, Skagit County on the south, and the Strait of Georgia on the west. The county seat and largest city is Bellingham. The county was created from Island County by the Washington Territorial Legislature on March 9, 1854. It originally included the territory of present-day San Juan and Skagit counties, which were later organized after additional settlement. Its name derives from the Lummi word Xwot\u02bcqom, meaning \"noisy water.\" Whatcom County comprises the Bellingham, WA Metropolitan Statistical Area."