- Douglas County is a county located in the U.S. state of Washington. As of the 2020 census, its population was 42,938. The county seat is Waterville, while its largest settlement is East Wenatchee. The county was created out of Lincoln County on November 28, 1883 and is named for American statesman Stephen A. Douglas.
- Washington State Route 9 (Wikipedia)
State Route 9 (SR 9) is a 98.17-mile (157.99 km) long state highway traversing three counties, Snohomish, Skagit, and Whatcom, in the U.S. state of Washington. The highway extends north from an interchange with SR 522 north of Woodinville north through Snohomish, Lake Stevens, Arlington, Sedro-Woolley, and Nooksack to become British Columbia Highway 11 (BC 11) at the Canada–US border in Sumas. Three other roadways are briefly concurrent with the route: SR 530 in Arlington, SR 20 in Sedro-Woolley, and SR 542 near Deming. A spur route in Sumas serves trucks traveling into British Columbia.