503 Area Code: Portland, Oregon

Northwestern Oregon is served by the 503 area code, with Portland as its primary city. Portland sits at the confluence of the Willamette and Columbia rivers, organized around a downtown that has long anchored the city's working profile — a substantial port, a long-standing role as the regional commercial center for the Pacific Northwest, and a more recent reorientation toward technology, healthcare, and a substantial creative-industries base. The 503 footprint extends through Salem (the state capital), Beaverton, Hillsboro (Intel's primary US presence), and the surrounding northwestern Oregon counties along the lower Columbia River.

Records linked to 503 numbers in the directory often include Eugene, Oregon's other major city, which lies outside the 503 footprint to the south. The pattern reflects standard public-record dynamics, with phone numbers porting across Oregon and addresses linked across multiple cities. The directory currently documents 695 distinct prefixes within 503 in detail, a working subset of the prefix population the code carries.

Portland's home values come in well above the US median, in line with broader Pacific Northwest pricing pressure that has reshaped the region's housing market over the past decade. Median household income runs above the national reading, the city's median age sits close to the US figure, and population places Portland as the largest city in Oregon — substantial enough to anchor a metropolitan area that pulls steadily on populations from across the Pacific Northwest. The broader 503 footprint covers the densely populated northwestern corner of the state.