Puget Sound is an arm of the Pacific Ocean in the Pacific Northwest of the United States. Puget Sound is named by George Vancouver for Lieutenant Peter Puget, who explored the south end in May 1792.

The United States Geological Survey defines the Puget Sound as a bay, with numerous channels and branches. It extends 144 km (90 mi) south from the Strait of Juan de Fuca to Olympia, Washington; the northern boundary is formed, at its main entrance, by a line between Point Wilson on the Olympic Peninsula and Partridge on Whidbey Island; at a second entrance, between West Point on Whidbey Island, Deception Island, and Rosario Head on Fidalgo Island; at a third entrance, the south end of Swinomish Channel between Fidalgo Island and McGlinn Island [1]

Principal cities in the region are Seattle, Tacoma, Olympia, Everett, Bremerton, Port Orchard, and Anacortes.

U.S. Counties along Puget Sound:

The San Juan Islands can also be found in the Puget Sound Region.

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