| 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 |
|---|---|---|---|
| 503-839 | Portland | Multnomah | Wireless |
| 503-294 | Portland | Multnomah | Landline |
| 503-466 | Beaverton | Washington | Landline |
| 503-866 | Portland | Washington | Wireless |
| 503-747 | Beaverton | Washington | Landline |
| 503-685 | Wilsonville | Clackamas | Landline |
| 503-508 | Salem | Marion | Wireless |
| 503-412 | Portland | Multnomah | Landline |
| 503-884 | Salem | Marion | Wireless |
| 503-273 | Portland | Multnomah | Landline |
| 503-955 | Portland | Washington | Wireless |
| 503-341 | Portland | Washington | Wireless |
| 503-754 | Portland | Washington | Wireless |
| 503-470 | Seaside | Clatsop | Wireless |
| 503-741 | Astoria | Clatsop | Wireless |
| 503-682 | Wilsonville | Clackamas | Landline |
| 503-355 | Rockaway Beach | Tillamook | Landline |
| 503-804 | Portland | Washington | Wireless |
| 503-814 | Salem | Marion | Landline |
| 503-823 | Portland | Multnomah | Landline |