Area Code Box

Area code 503

Where is area code 503?

Portland, Beaverton and Salem, Oregon

Local time: … (Pacific Time)

StateOregon
CountryUnited States
Main citiesPortland, Beaverton and Salem
Time zonePacific Time
Overlay area codes971
In service since1947
Assigned prefixes784
Dialing format(503) XXX-XXXX · +1 503 XXX XXXX from abroad

Look up a 503 number

Enter a 3-digit area code or a full 10-digit number.

Cities and towns in area code 503

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 503.

Phone companies in area code 503

The carriers that hold the most 503 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

PrefixesCarrier
222Qwest (Lumen)
111Ziply Fiber
71New Cingular Wireless PCS (AT&T)
56T-Mobile USA
54Verizon Wireless
51Allstream
34Teleport Communications America
30Level 3 Communications

All 784 prefixes in area code 503

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Area codes that overlay 503

Questions

Where is area code 503?
Area code 503 is in Oregon. It serves Portland, Beaverton, Salem, Lake Oswego and Tualatin and 68 other cities and towns.
What time zone is area code 503 in?
Area code 503 uses Pacific Time.
What area codes overlay 503?
971 serves the same area as 503. New numbers in the area can get any of these codes, which is why local calls need all 10 digits.
Is a call from area code 503 a scam?
The area code alone doesn’t tell you. Most calls from 503 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 503 number, let it go to voicemail.
When did area code 503 start?
503 went into service in 1947.
Can a 503 number be outside Oregon?
Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 503 caller can be anywhere.

Other area codes in Oregon

Area codeMain cities
458Eugene, Bend and Albany
541Eugene, Bend and Medford