The Quinault Indian Reservation, at , is located on the Pacific coast of Washington, primarily in northwestern Grays Harbor County, with small parts extending north into southwestern Jefferson County. It has a land area of 819.294 km² (316.331 sq mi) and reported a resident population of 1,370 persons as of the 2000 census. The Quinault people settled onto reservation lands after signing the Quinault Treaty with the former Washington Territory in 1856. About 60% of the reservation's population lives in the community of Taholah, on the Pacific coast at the mouth of the Quinault River.