| 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 |
|---|---|---|---|
| 503-327 | Portland | Washington | Landline |
| 503-671 | Beaverton | Washington | Landline |
| 503-501 | Portland | Multnomah | Wireless |
| 503-578 | Beaverton | Washington | Landline |
| 503-635 | Lake Oswego | Clackamas | Landline |
| 503-849 | Portland | Washington | Wireless |
| 503-609 | Corbett | Multnomah | Landline |
| 503-243 | Portland | Multnomah | Landline |
| 503-351 | Portland | Washington | Wireless |
| 503-379 | Mcminnville | Yamhill | Landline |
| 503-603 | Beaverton | Washington | Landline |
| 503-745 | Portland | Multnomah | Landline |
| 503-497 | Portland | Multnomah | Landline |
| 503-624 | Beaverton | Washington | Landline |
| 503-506 | Beaverton | Washington | Landline |
| 503-343 | Portland | Multnomah | Landline |
| 503-409 | Salem | Marion | Wireless |
| 503-933 | Portland | Multnomah | Wireless |
| 503-292 | Portland | Multnomah | Landline |
| 503-214 | Portland | Multnomah | Landline |