| 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 |
|---|---|---|---|
| 503-486 | Portland | Multnomah | Landline |
| 503-346 | Portland | Multnomah | Landline |
| 503-432 | Portland | Washington | Landline |
| 503-422 | Portland | Washington | Wireless |
| 503-529 | Portland | Washington | Wireless |
| 503-625 | Sherwood | Washington | Landline |
| 503-620 | Beaverton | Washington | Landline |
| 503-515 | Portland | Washington | Wireless |
| 503-286 | Portland | Multnomah | Landline |
| 503-658 | Portland | Multnomah | Landline |
| 503-649 | Beaverton | Washington | Landline |
| 503-854 | Detroit | Marion | Landline |
| 503-457 | Tillamook | Tillamook | Wireless |
| 503-924 | Beaverton | Washington | Landline |
| 503-429 | Vernonia | Columbia | Landline |
| 503-337 | Estacada | Clackamas | Landline |
| 503-368 | Nehalem | Tillamook | Landline |
| 503-821 | Portland | Multnomah | Landline |
| 503-714 | Dayton | Yamhill | Landline |
| 503-251 | Portland | Multnomah | Landline |