503 Area Code belongs to the Oregon (OR) State.
Other cities in the 503 Area Code.
Aloha, Astoria, Beaverton, Canby, Dallas, Fairview, Forest Grove, Gladstone, Gresham, Hillsboro, Keizer, Lake Oswego, McMinnville, Milwaukie, Monmouth, Newberg, Oregon City, Portland, Salem, St. Helens, Stayton, Tigard, Troutdale, Tualatin, West Linn, Wilsonville, Woodburn
Oregon (OR)
also shares with these area codes: