State directory / Oregon
US number directory / Oregon
Oregon
area codes
The earliest listed Oregon code is 503, in service since 1947; the state now has 4 geographic codes.
4geographic area codes
in this reference
in this reference
Earliest listed503 · 1947
Standard timeMT / PT
Overlays in this stateYes — see code notes
Major city starting points
Salem (capital): 503, 971; Portland (largest city in state reference): 458, 503, 971.
| City | Reference role | Codes to check |
|---|---|---|
| Salem | Capital | 503, 971 |
| Portland | Largest city in state reference | 458, 503, 971 |
City reference · 2026-10-25
Codes, cities & coverage
Oregon's active territorial overlay complexes are 458/541; 503/971.
| Code | Region / major cities named in the reference | Introduced | Active overlay complexes |
|---|---|---|---|
| 458 | Oregon ( Eugene , Medford, Bend, Pendleton, Corvallis, Ontario, Burns; excludes the Portland metropolitan area) | 10-Feb-2010 | 458/541 |
| 503 | Oregon ( Portland , Salem , Hillsboro , Beaverton , St. Helens , Tillamook , Astoria , and most of northwestern Oregon) | 01-Jan-1947 | 503/971 |
| 541 | Oregon ( Eugene , Bend, Corvallis, Medford, Pendleton, and all of Oregon except metropolitan northwestern Oregon, including Portland, Salem, and Astoria) | 05-Nov-1995 | 458/541 |
| 971 | Oregon ( Portland , Salem, Hillsboro, Beaverton, and most of northwestern Oregon) | 01-Oct-2000 | 503/971 |
NANPA dates & overlays · 2026-10-25
Wikipedia geography · 2026-10-25 · CC BY-SA 4.0
Time zones
Oregon spans 2 standard-time offsets in the state reference: MT / PT.
| Standard offset | Region | Daylight saving |
|---|---|---|
| UTC−07:00 MT | Northern 80% of Malheur County : UTC−07:00 MST Mountain Standard Time | Yes |
| UTC−08:00 PT | Most of state: UTC−08:00 PST Pacific Standard Time | Yes |