- The Sammamish people (Lushootseed: sc̓ababš) are a Lushootseed-speaking Southern Coast Salish people. They are indigenous to the Sammamish River Valley in central King County, Washington. The Sammamish speak Lushootseed, a Coast Salish language which was historically spoken across most of Puget Sound, although its usage today is mostly reserved for cultural and ceremonial practices.