This is a list of telephone area codes in the state of Oregon. As of 2022, it is one of six states (along with Pennsylvania, Connecticut, Maryland, Idaho and West Virginia) that is entirely overlaid. Area codes 503 and 971, 503: The northwestern corner of Oregon, including Portland, Oregon, Portland and its metropolitan area, Salem, Oregon, Salem and other cities Area codes 541 and 458, 541: All of Oregon outside the northwestern corner, including Eugene, Oregon, Eugene Area codes 503 and 971, 971: An Overlay plan, overlay of area code 503. Until 2008, 971 was a concentrated overlay, meaning it was only present in some parts of the 503 area. Today it is a standard overlay. Area codes 541 and 458, 458: An overlay of area code 541. Under the original North American Numbering Plan of 1947, area code 503 covered all of Oregon. Area code 541 was split off in 1995, the 971 overlay of 503 became active in 2000, and the 458 overlay of 541 became active in 2010.

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{{Area code list Communications in Oregon, Area code list Area codes in Oregon, Lists of United States area codes, Oregon Oregon geography-related lists, Area codes