El Codigo de Area 503 incluye localidades dentro de OREGON.
Las localidades con Codigo de Area 503 mas populares son: 1) Portland. 2) Beaverton. 3) Garibaldi. 4) Aurora. 5) Falls City. 6) Amity. 7) Carlton. 8) Cannon Beach. 9) Clatskanie. 10) Beaver Creek.
En la siguiente tabla se muestran las localidades con Codigo de Area 503.
| Localidad | Condado | Estado | Codigo de Area |
|---|---|---|---|
| AMITY | OREGON | Codigo 503 | |
| ASTORIA | OREGON | Codigo 503 | |
| AUMSVILLE TURNER | OREGON | Codigo 503 | |
| AURORA | OREGON | Codigo 503 | |
| BAY CITY | OREGON | Codigo 503 | |
| BEAVER | OREGON | Codigo 503 | |
| BEAVER CREEK | OREGON | Codigo 503 | |
| BEAVERTON | OREGON | Codigo 503 | |
| CANBY NEEDY | OREGON | Codigo 503 | |
| CANNON BEACH | OREGON | Codigo 503 | |
| CARLTON | OREGON | Codigo 503 | |
| CHARBONNEAU | OREGON | Codigo 503 | |
| CLACKAMAS | OREGON | Codigo 503 | |
| CLATSKANIE | OREGON | Codigo 503 | |
| CLOVERDALE | OREGON | Codigo 503 | |
| COLTON | OREGON | Codigo 503 | |
| CORBETT | OREGON | Codigo 503 | |
| DALLAS | OREGON | Codigo 503 | |
| DAYTON | OREGON | Codigo 503 | |
| DETROIT | OREGON | Codigo 503 | |
| ESTACADA | OREGON | Codigo 503 | |
| FALLS CITY | OREGON | Codigo 503 | |
| GARIBALDI | OREGON | Codigo 503 | |
| GERVAIS | OREGON | Codigo 503 | |
| GOVERNMENT CAMP | OREGON | Codigo 503 | |
| GRAND ISLAND | OREGON | Codigo 503 | |
| GRAND RONDE | OREGON | Codigo 503 | |
| GRESHAM | OREGON | Codigo 503 | |
| HOOD LAND | OREGON | Codigo 503 | |
| JEWELL | OREGON | Codigo 503 | |
| KNAPPA | OREGON | Codigo 503 | |
| LYONS | OREGON | Codigo 503 | |
| MCMINNVILLE | OREGON | Codigo 503 | |
| MILL CITY | OREGON | Codigo 503 | |
| MOLALLA | OREGON | Codigo 503 | |
| MONITOR | OREGON | Codigo 503 | |
| MOUNT ANGEL | OREGON | Codigo 503 | |
| NEHALEM | OREGON | Codigo 503 | |
| NEWBERG | OREGON | Codigo 503 | |
| NORTH PLAINS | OREGON | Codigo 503 | |
| PACIFIC CITY | OREGON | Codigo 503 | |
| PORTLAND | OREGON | Codigo 503 | |
| PORTLAND BURLINGTON | OREGON | Codigo 503 | |
| RAINIER | OREGON | Codigo 503 | |
| REDLAND | OREGON | Codigo 503 | |
| ROCKAWAY | OREGON | Codigo 503 | |
| SAINT PAUL | OREGON | Codigo 503 | |
| SALEM | OREGON | Codigo 503 | |
| SCAPPOOSE | OREGON | Codigo 503 | |
| SCIO | OREGON | Codigo 503 | |
| SEASIDE | OREGON | Codigo 503 | |
| SHERIDAN | OREGON | Codigo 503 | |
| SHERWOOD | OREGON | Codigo 503 | |
| SILVERTON | OREGON | Codigo 503 | |
| ST HELENS | OREGON | Codigo 503 | |
| STAFFORD-SANDY | OREGON | Codigo 503 | |
| STAYTON | OREGON | Codigo 503 | |
| TILLAMOOK | OREGON | Codigo 503 | |
| VERNONIA | OREGON | Codigo 503 | |
| WARRENTON | OREGON | Codigo 503 | |
| WESTPORT | OREGON | Codigo 503 | |
| WILLAMINA | OREGON | Codigo 503 | |
| WOODBURN | OREGON | Codigo 503 | |
| YAMHILL | OREGON | Codigo 503 |