Fidalgo Island

Fidalgo Island is an island in Skagit County, Washington, located about 78 miles (126 km) north of Seattle. To the east, it is separated from the mainland by the Swinomish Channel, and from Whidbey Island to the south by Deception Pass. The island is named after the Spanish explorer and cartographer Salvador Fidalgo who explored the area in 1790.

Its largest city is Anacortes with a population of 14,557 according to the 2000 Census. The total population of the island was 20,700. There are ferries to Sidney, British Columbia and several ports in the San Juan Islands.