Southwest Washington

Southwest Washington
Region
View from Expedition 72, October 2024
Southwest Washington with Chehalis River watershed highlighted
Coordinates: 46°30′N 122°45′W / 46.500°N 122.750°W / 46.500; -122.750
CountryUnited States
StateWashington

Southwest Washington is a geographical area of the U.S. state of Washington, encompassing six counties in Western Washington. It generally includes the area south of Olympia and Thurston County, down to the Oregon-Washington state line at Vancouver, and west of the Yakima Indian Reservation.