| 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 |
|---|---|---|---|
| 503-256 | Portland | Multnomah | Landline |
| 503-729 | Portland | Multnomah | Wireless |
| 503-502 | Portland | Washington | Wireless |
| 503-218 | West Linn | Clackamas | Landline |
| 503-363 | Salem | Marion | Landline |
| 503-644 | Beaverton | Washington | Landline |
| 503-646 | Beaverton | Washington | Landline |
| 503-871 | Salem | Marion | Wireless |
| 503-397 | Saint Helens | Columbia | Landline |
| 503-424 | Beaverton | Washington | Landline |
| 503-825 | Portland | Washington | Landline |
| 503-400 | Salem | Marion | Landline |
| 503-952 | Portland | Multnomah | Landline |
| 503-661 | Gresham | Multnomah | Landline |
| 503-937 | Portland | Multnomah | Landline |
| 503-398 | Beaver | Tillamook | Landline |
| 503-366 | Saint Helens | Columbia | Landline |
| 503-388 | Portland | Multnomah | Wireless |
| 503-462 | Portland | Washington | Landline |
| 503-487 | Newberg | Yamhill | Landline |