Puget Sound Regional Council Puget Sound Regional Council The Puget Sound Regional Council (PSRC) is a metropolitan planning organization that develops policies and makes decisions about transportation planning, economic development, and growth management throughout the four-county Seattle metropolitan area surrounding Puget Sound. It is a forum for cities, towns, counties, transit agencies, port districts, Native American tribes, and state agencies to address regional issues. The Puget Sound Regional Council serves the central Puget Sound region of Washington state. The region is made up of King County, Kitsap County, Pierce County, and Snohomish County, which collectively encompass and comprise 73 cities and towns. The five
Puget Sound Sound extends approximately from Deception Pass in the north to Olympia, Washington in the south. Its average depth is and its maximum depth, off Jefferson Point between Indianola and Kingston, is . The depth of the main basin, between the southern tip of Whidbey Island and Tacoma, Washington, is approximately . In 2009, the term Salish Sea was established by the United States Board on Geographic Names as the collective waters of Puget Sound, the Strait of Juan de Fuca, and the Strait of Georgia. Sometimes the terms "Puget Sound" and "Puget Sound and adjacent waters" are used for not