503 Area Code
The 503 area code serves Astoria, Gresham, Portland in United States. Learn the cities and counties covered, the time zone, dialing format, and how to get a local 503 business number.
Cities & regions in the 503 area code (3)
Frequently asked questions
What area code is 503?+
503 is a North American Numbering Plan (NANP) area code in United States, primarily covering Astoria, Gresham, Portland.
Where is the 503 area code located?+
The 503 area code is located in United States. It operates on Pacific Time (PT).
How do you dial the 503 area code from abroad?+
Dial your country's international exit code, then +1 503 followed by the 7-digit local number. From inside the US/Canada, dial 1 503 XXX-XXXX.
Can I get a 503 phone number for my business?+
Yes. AstraQom provisions local 503 DID numbers for SIP trunking, hosted PBX, contact centers and toll-free porting — usually within minutes, with no long-term contract.
Get a local 503 number for your business
Local presence in seconds. Hosted PBX, SIP trunking and contact-center routing on Tier-1 carriers with 24/7 human support.
AstraQom is an independent global telecom carrier serving 117 countries. We provision local 503 DID numbers, SIP trunks, hosted PBX, contact-center routing and SD-WAN — all on Tier-1 carrier infrastructure with no grey termination and 24/7 multilingual support.