| 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 |
|---|---|---|---|
| 503-785 | Clackamas | Clackamas | Landline |
| 503-378 | Salem | Marion | Landline |
| 503-796 | Portland | Multnomah | Landline |
| 503-482 | Portland | Multnomah | Landline |
| 503-489 | Gresham | Multnomah | Landline |
| 503-634 | Woodburn | Marion | Landline |
| 503-696 | Hillsboro | Washington | Landline |
| 503-614 | Beaverton | Washington | Landline |
| 503-974 | Portland | Multnomah | Landline |
| 503-576 | Salem | Marion | Landline |
| 503-723 | Oregon City | Clackamas | Landline |
| 503-267 | Portland | Washington | Wireless |
| 503-264 | Hillsboro | Washington | Landline |
| 503-447 | Portland | Washington | Landline |
| 503-604 | Portland | Washington | Wireless |
| 503-844 | Hillsboro | Washington | Landline |
| 503-245 | Portland | Multnomah | Landline |
| 503-928 | Portland | Multnomah | Wireless |
| 503-899 | Newberg | Yamhill | Landline |
| 503-633 | Saint Paul | Marion | Landline |