About Area Code 503
- Region Code
- 503
- City
- Portland
- State
- Oregon
- Population
- 2,627,937
- Largest City
- Portland
- Time Zone
- Pacific Time
Oregon
(503) Area Code 503 — Portland, Oregon
503 Area Code – Portland, Oregon: Location, Time Zone & History
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Map of Area Code 503
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History & Cultural Notes
Area code 503 was assigned in 1947 as one of the original North American area codes and originally covered the entire state of Oregon. It served as the state's sole area code for 48 years, a long tenure that left a lasting imprint on how Oregonians identify with the number. The plan area serves Portland, Salem, Gresham, and Astoria, spanning northwestern Oregon after 541 split off to cover the rest of the state.
The Portland metro area is nicknamed the "Silicon Forest," reflecting a dense cluster of technology and semiconductor activity, including Intel. Alongside that tech identity, the region is home to well-known athletic and outdoor apparel companies, giving the area a distinctive blend of innovation-driven and outdoor-lifestyle industries:
- Technology and semiconductors ("Silicon Forest", Intel)
- Athletic and outdoor apparel (Nike, Adidas, Columbia Sportswear)
- Healthcare
- Timber and forest products
- Craft food and beverage
As demand grew, the 971 overlay was introduced to share the numbering plan with 503, eventually expanding to include Clatsop and Tillamook counties and completing the overlay complex. Neighboring codes 360, 564, 541, and 458 border the region, underscoring how 503 fits within the broader Pacific Northwest numbering landscape while retaining its own distinct regional character.