| 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 |
|---|---|---|---|
| 503-461 | Nehalem | Tillamook | Landline |
| 503-467 | Portland | Multnomah | Landline |
| 503-383 | Salem | Marion | Landline |
| 503-564 | Welches | Clackamas | Landline |
| 503-640 | Hillsboro | Washington | Landline |
| 503-491 | Gresham | Multnomah | Landline |
| 503-922 | Portland | Washington | Landline |
| 503-414 | Portland | Multnomah | Landline |
| 503-465 | Gresham | Multnomah | Landline |
| 503-780 | Portland | Washington | Wireless |
| 503-282 | Portland | Multnomah | Landline |
| 503-939 | Portland | Washington | Wireless |
| 503-310 | Portland | Washington | Wireless |
| 503-328 | Gresham | Multnomah | Landline |
| 503-767 | Stayton | Marion | Landline |
| 503-510 | Salem | Marion | Wireless |
| 503-339 | Salem | Marion | Landline |
| 503-396 | Saint Helens | Columbia | Wireless |
| 503-456 | Beaverton | Washington | Landline |
| 503-358 | Portland | Washington | Wireless |