| General Information about Area Code 503 | |
|---|---|
| Country | United States |
| State / Province / Territory | Oregon |
| Major City | Portland |
| Time Zone | Pacific (UTC-08:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 503-349 | Portland | Washington | Wireless |
| 503-452 | Portland | Multnomah | Landline |
| 503-957 | Portland | Washington | Wireless |
| 503-451 | Portland | Washington | Landline |
| 503-224 | Portland | Multnomah | Landline |
| 503-290 | Portland | Multnomah | Landline |
| 503-257 | Portland | Multnomah | Landline |
| 503-455 | Clatskanie | Columbia | Landline |
| 503-405 | Portland | Multnomah | Landline |
| 503-567 | Beaverton | Washington | Landline |
| 503-892 | Portland | Multnomah | Landline |
| 503-647 | North Plains | Washington | Landline |
| 503-616 | Portland | Multnomah | Landline |
| 503-381 | Portland | Washington | Wireless |
| 503-883 | Mcminnville | Yamhill | Landline |
| 503-370 | Salem | Marion | Landline |
| 503-359 | Forest Grove | Washington | Landline |
| 503-872 | Portland | Multnomah | Landline |
| 503-246 | Portland | Multnomah | Landline |
| 503-776 | Aurora | Marion | Landline |