Thornwood is an unincorporated community in Skagit County, in the U.S. state of Washington.[1]
A post office called Thornwood was established in 1900, and remained in operation until 1912.[2] The community derives its name from W. J. Thorne, an early resident.[3]
48°35′00″N 122°13′50″W / 48.58333°N 122.23056°W