What is the area code for Lake Oswego, OR?

Lake Oswego uses 2 area codes: 503 and 971. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.

What time zone is Lake Oswego in?

Lake Oswego is in the Pacific time zone.

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Lake Oswego, OR Area Codes

Lake Oswego, Oregon (population 39,722) uses area codes 503 and 971.

Area code503

Area code971

Time zonePacific

Local time now…

NANPA records do not list Lake Oswego separately: its numbers belong to the Clackamas County exchange, which covers the whole area.

Lake Oswego and nearby cities in area code 503

Carriers with Lake Oswego numbers

69 prefixes are assigned to the Clackamas County exchange: 14% mobile, 30% VoIP and cable, 55% landline.

Carrier	Prefixes
Lumen (Qwest)	24
Allstream	9
T-Mobile	8
Lumen (Level 3)	7
AT&T (Teleport)	5
Onvoy (Sinch)	4
Verizon Business (MCImetro)	2
Comcast (Xfinity)	2

Area codes used in Lake Oswego

Area code	Prefixes serving Lake Oswego	Main carriers in this code
503	49	Lumen (Qwest), Ziply Fiber, AT&T Mobility
971	20	AT&T Mobility, Onvoy (Sinch), T-Mobile

Lake Oswego phone number prefixes

Numbers starting with these first six digits were originally assigned to the Clackamas County exchange.

503-210 Allstream
503-212 Allstream
503-303 Verizon Business (MCImetro)
503-305 Verizon Business (MCImetro)
503-342 Lumen (Level 3)
503-343 Lumen (Level 3)
503-344 Lumen (Level 3)
503-353 Lumen (Qwest)
503-387 AT&T (Teleport)
503-406 Lumen (Level 3)
503-451 AT&T (Teleport)
503-462 AT&T (Teleport)
503-479 Lumen (Level 3)
503-496 Allstream
503-513 Lumen (Qwest)
503-518 Beaver Creek Cooperative Telephone Company
503-534 Lumen (Qwest)
503-557 Lumen (Qwest)
503-571 Lumen (Qwest)
503-594 Allstream
503-607 Allstream
503-635 Lumen (Qwest)
503-636 Lumen (Qwest)
503-650 Lumen (Qwest)
503-652 Lumen (Qwest)
503-653 Lumen (Qwest)
503-654 Lumen (Qwest)
503-655 Lumen (Qwest)
503-656 Lumen (Qwest)
503-657 Lumen (Qwest)
503-659 Lumen (Qwest)
503-675 Lumen (Qwest)
503-683 AT&T (Teleport)
503-697 Lumen (Qwest)
503-699 Lumen (Qwest)
503-722 Lumen (Qwest)
503-723 Lumen (Qwest)
503-742 Lumen (Qwest)
503-744 Onvoy (Sinch)
503-765 AT&T (Teleport)
503-785 Lumen (Qwest)
503-786 Lumen (Qwest)
503-794 Lumen (Qwest)
503-850 Lumen (Level 3)
503-882 Lumen (Level 3)
503-905 Allstream
503-908 Comcast (Xfinity)
503-919 AT&T Mobility
503-974 Comcast (Xfinity)
971-204 Allstream
971-206 Allstream
971-233 Paetec Itel
971-236 Allstream
971-335 T-Mobile
971-353 T-Mobile
971-356 AT&T Mobility
971-377 Onvoy (Sinch)
971-381 Vonage
971-396 T-Mobile
971-419 T-Mobile
971-447 T-Mobile
971-459 T-Mobile
971-471 Onvoy (Sinch)
971-476 T-Mobile
971-486 T-Mobile
971-529 Fractel
971-535 Onvoy (Sinch)
971-825 Ton80 Communications
971-925 Xo Oregon

Nearby cities in area code 503

Questions

What is the area code for Lake Oswego, OR?: Lake Oswego uses 2 area codes: 503 and 971. They overlay each other, so all of them cover the whole city and you dial 10 digits for local calls.
What time zone is Lake Oswego in?: Lake Oswego is in the Pacific time zone.