Oregon Area Codes

Area codes: 4
ZIP codes: 481
Cities & towns: 373
Counties: 36

Every area code in Oregon

All Oregon area codes, what each primarily serves, and which share ground with another.
Area code	Primarily serves	Shares ground with	In service
458	Eugene	541	2010
503	Portland	971	1947
541	Eugene	458	1995
971	Portland	503	2000

A code in the “shares ground” column is an overlay: it covers the same territory rather than a different part of Oregon, which is why local calls there are dialled as ten digits.

Which codes share the same ground

Oregon has 2 groups of codes that overlay one another: the codes inside a group cover the same territory rather than different parts of the state, so local calls there are dialled as ten digits.

458 541
503 971

Where Oregon's communities sit

Each point is an Oregon community, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Largest Oregon cities and their codes

largest 25

Scope every area code assigned to Oregon. Source LocalCallingGuide NPA list (2026-07 NPA list) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. Overlay relationships come from the numbering-plan authority; the city match is computed.