| 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 |
|---|---|---|---|
| 503-875 | Portland | Multnomah | Wireless |
| 503-721 | Portland | Multnomah | Landline |
| 503-591 | Beaverton | Washington | Landline |
| 503-891 | Portland | Washington | Wireless |
| 503-348 | Portland | Washington | Wireless |
| 503-954 | Portland | Multnomah | Wireless |
| 503-236 | Portland | Multnomah | Landline |
| 503-528 | Portland | Multnomah | Landline |
| 503-284 | Portland | Multnomah | Landline |
| 503-672 | Beaverton | Washington | Landline |
| 503-272 | Government Camp | Clackamas | Landline |
| 503-265 | Portland | Washington | Landline |
| 503-252 | Portland | Multnomah | Landline |
| 503-886 | Portland | Multnomah | Landline |
| 503-449 | Portland | Washington | Wireless |
| 503-522 | Portland | Washington | Wireless |
| 503-859 | Lyons | Linn | Landline |
| 503-307 | Portland | Washington | Wireless |
| 503-499 | Portland | Multnomah | Landline |
| 503-586 | Salem | Marion | Landline |