Area code 503 is located in northwestern Oregon and covers Portland, Salem, Gresham, Hillsboro, and Beaverton. It has a single overlay (971) that serves the same area.

Can you request an area code?

There are some restrictions on out of market use of area codes. The FCC’s website will have the most information on what those are and why. In most cases though, you can simply request the area code you want, as long as that area code is within T-Mobile’s provided service US service area.

Is 503 area code a cell phone?

Area codes 503 and 971 are telephone area codes in the North American Numbering Plan (NANP) for the northwestern region of the U.S. state of Oregon. The numbering plan area (NPA) comprises the cities of Portland, Salem, and Astoria.