🇺🇸 503 area code
Area code 503 covers Portland, Salem, Beaverton and Hillsboro and the surrounding area in Oregon. It shares that territory with 971, so the same neighbourhood can have numbers in any of them. Enter a 503 number below for a free check before you call back.
- Location: Portland, Oregon
- Time zone: Pacific (UTC−8)
- In service since 1947
查询号码
首次查询即可得到有效性、运营商、线路类型和地区。
Area code 503 at a glance
Cities in area code 503
- Portland
- Salem
- Beaverton
- Hillsboro
- Gresham
- Lake Oswego
- McMinnville
- Tualatin
- Canby
- Clackamas
Is a 503 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 503 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 503 number to people in Oregon because a local-looking call is more likely to be answered. If a 503 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 503
503 is one of the original North American area codes, created in 1947 when AT&T and the Bell System first divided the continent into numbering plan areas.
It is part of the 503/971 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
As the region grew, 541 and 971 were carved out of or added to 503.
Area codes
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常见问题
Area code 503 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 503?
Area code 503 is in Oregon, United States. It covers Portland, Salem, Beaverton, Hillsboro, Gresham and Lake Oswego.
What time zone is area code 503?
503 is in the Pacific (UTC−8) time zone, and observes daylight saving time.
What area codes overlay 503?
971 serves the same area as 503. Numbers in all of them are local to one another.
When did area code 503 start?
503 entered service in 1947.
How do I find out who called me from 503?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 503?
If you live in or near Oregon, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 503 callers who will not leave a message are best looked up before you call back.