Area Code 503 - Details, official location, official service date
https://www.areacodehelp.com/where/area_code_503.shtml
WebArea codes 503 and 971 serve northwest Oregon including the larger cities and communities of Aloha, Beaverton, Gresham, Hillsboro, Keizer, Lake Oswego, Mcminnville, Milwaukie, Oregon City, Portland, Salem, Tigard, Tualatin, West Linn, Woodburn in addition to many smaller communities. Select Any Oregon City or Town Alphabetically. A. B. C. …
DA: 75 PA: 99 MOZ Rank: 96 Up or Down: Up