 According to the United States Census Bureau, the CDP has a total area of , of which are land and , or 2.57%, are water.The CDP extends from Wawa Point in the north, just south of Jackson Cove, to the Mason County line in the south at Triton Cove, and includes the unincorporated communities (from north to south) of Seal Rock, Brinnon, and Duckabush.The Dosewallips River crosses the north-central part of the CDP and enters Hood Canal at Brinnon Flats just north of the settlement of Brinnon, while the Duckabush River crosses the south-central part of the CDP, entering Hood Canal at Duckabush village, just south of Black Point.