Puget Sound is an American Viticultural Area (AVA) in northwest portion of Washington state encompassing Clallam, Island, Jefferson, King, Kitsap, Mason, Pierce, San Juan, Skagit, Snohomish, Thurston and Whatcom Counties. It is the only Washington AVA located west of the Cascade Mountains.
Puget Sound (or the "Sound") is an inlet of the Pacific Ocean extending about 190 mi (306 km) south from Admiralty Inlet and Juan de Fuca Strait to Olympia. It contains 13,100 sq mi (8,384,000 acres) of land, 150 sq mi (388 km2) of fresh water, and 2,500 sq mi (6,475 km2) of saltwater. The viticultural area lies entirely within the land basin surrounding the Sound.
The Puget Sound viticultural area contains approximately 55% of the watershed's land area and water or 7,150 sq mi (4,576,000 acres) of land and 1,500 sq mi (3,885 km2) of water for a total area of 8,650 sq mi (5,536,000 acres). It has a maximum length of 190 mi (306 km) from north to south and 60 mi (97 km) from east to west, although it is most often less than 45 mi (72 km) wide.
The AVA was established by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury on October 4, 1995 after reviewing a petition submitted by Gerard and Jo Ann Bentryn of Bainbridge Island Vineyards & Winery in Bainbridge Island, Washington, proposing a new viticultural area within the State of Washington to be known as "Puget Sound."
The region is almost entirely within hardiness zone 9a.