| 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 |
|---|---|---|---|
| 503-309 | Portland | Washington | Wireless |
| 503-296 | Portland | Multnomah | Landline |
| 503-784 | Portland | Washington | Wireless |
| 503-728 | Clatskanie | Columbia | Landline |
| 503-951 | Woodburn | Marion | Wireless |
| 503-631 | Oregon City | Clackamas | Landline |
| 503-695 | Corbett | Multnomah | Landline |
| 503-427 | Portland | Washington | Landline |
| 503-266 | Canby | Clackamas | Landline |
| 503-278 | Portland | Multnomah | Wireless |
| 503-539 | Portland | Washington | Wireless |
| 503-602 | Salem | Marion | Wireless |
| 503-523 | Portland | Multnomah | Landline |
| 503-890 | Portland | Washington | Wireless |
| 503-442 | Beaver | Tillamook | Landline |
| 503-850 | Portland | Multnomah | Landline |
| 503-720 | Portland | Washington | Wireless |
| 503-365 | Salem | Marion | Landline |
| 503-350 | Beaverton | Washington | Landline |
| 503-795 | Portland | Multnomah | Landline |