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US area code · Oregon

Area code 503

Where the 503 area code is, its overlay and how to dial a +1 503 number from anywhere.

CoversPortland, OregonTime zonePacific (PT)TypeOverlay
Quick answer

The 503 area code is in Portland, Oregon, United States (Pacific (PT)). To call from abroad: +1 503 555-0123. It is an overlay, so all 10 digits are dialled.

StateOregon
Main areaPortland
Time zonePacific (PT)
TypeOverlay
10-digit dialingRequired
In service since01-Jan-1947

The 503 area code is a geographic North American Numbering Plan (NANP) code covering Portland, Oregon. It has been in service since 01-Jan-1947 and sits in the Pacific (PT) time zone.

Overlay 503 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

503971

How to dial a 503 number

From abroad+1 503 555-0123
Within the US / Canada1 503 555-0123
Locally (same area)503 555-0123

Cities in the 503 area code

A 503 number is usually in one of these places in Oregon — 7 counties.

AlohaBeaverton WashingtonGresham MultnomahHillsboro WashingtonKeizer MarionLake Oswego ClackamasMcMinnville YamhillMilwaukieOregon City ClackamasPortland Clackamas;Multnomah;WashingtonSalem Marion;PolkTigardTualatin WashingtonWest Linn ClackamasWoodburn Marion

Other Oregon area codes

458541971

Frequently asked questions

Where is the 503 area code?

The 503 area code is in Portland, Oregon, United States (Pacific (PT)).

Is 503 an overlay area code?

Yes. 503 overlays the same region as 971, so callers dial all 10 digits.

Do I have to dial 10 digits for 503?

Yes — dial the area code plus the seven-digit number.

How do I call a 503 number from another country?

Dial your exit code (or +), then 1, then 503, then the number: +1 503 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 503 number does not pinpoint a street or ZIP code.

Missed a call from +1 503?

In the 30 days to September 24, 2026, 419 unwanted calls showing a 503 number were reported to the US Federal Trade Commission, 59% of them recorded messages or robocalls. That puts 503 at #238 of 670 area codes reported.

Other192
Calls pretending to be government, businesses, or family and friends54
Reducing your debt (credit cards, mortgage, student loans)40
Home improvement & cleaning29
Before you call back
  • If you do not know anyone in Oregon, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 503 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 503 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 503:

Qwest Corporation 222Ziply Fiber Northwest, LLC Dba Ziply Fiber 109New Cingular Wireless PCS, LLC 71T-Mobile USA, Inc. 56Cellco Partnership Dba Verizon Wireless 54Electric Lightwave LLC Dba Allstream 51

About 22.6% of the 800 prefixes in use belong to mobile carriers: a 503 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 503 — cities & rate centres