Woodburn is a city in Marion County, Oregon, United States. Incorporated in 1889, the community had been platted in 1871 after the arrival of the railroad. The city is located in the northern end of the Willamette Valley between Portland and Salem. Interstate 5 connects it to major cities to the north and south. Oregon routes 211, 214, 219, and 99E also serve the city, as do Union Pacific and Willamette Valley Railway freight rail lines.