San Juan Islands
John Hinde Curteich postcard
postmarked in 2010 with a 28 cent stamp
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The San Juan Islands are a part of the San Juan Archipelago in the northwest corner of the continental United States. The archipelago is split into two groups of islands based on national sovereignty. San Juan Islands are part of the U.S. state of Washington, while the Gulf Islands are part of the Canadian province of British Columbia. There are over 450 islands in the entire archipelago at high tide, but fewer than one-sixth are permanently inhabited.