Sedro-Woolley is a city in Skagit County. The city is part of the Mount Vernon–Anacortes, Washington Metropolitan Statistical Area and has a population of 12,421 according to the 2020 census. Sedro-Woolley is home to the North Cascades National Park. The city was incorporated on December 19, 1898, following the merger of two rival towns, Sedro (once called Bug) and Woolley, in Skagit County. Sedro-Woolley is located 25 miles inland from Puget Sound, 40 miles south of the border with Canada, and 65 miles north of Seattle.
The zip code for Sedro-Woolley is 98284.