| 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 |
|---|---|---|---|
| 503-253 | Portland | Multnomah | Landline |
| 503-653 | Clackamas | Clackamas | Landline |
| 503-483 | Hebo | Tillamook | Landline |
| 503-879 | Grand Ronde | Polk | Landline |
| 503-305 | Portland | Multnomah | Landline |
| 503-402 | Portland | Multnomah | Landline |
| 503-401 | Portland | Multnomah | Landline |
| 503-276 | Portland | Multnomah | Landline |
| 503-689 | Salem | Marion | Wireless |
| 503-507 | Salem | Marion | Wireless |
| 503-936 | Portland | Washington | Wireless |
| 503-940 | Portland | Washington | Wireless |
| 503-435 | Mcminnville | Yamhill | Landline |
| 503-221 | Portland | Multnomah | Landline |
| 503-662 | Yamhill | Yamhill | Landline |
| 503-259 | Beaverton | Washington | Landline |
| 503-858 | Beaverton | Washington | Landline |
| 503-551 | Salem | Marion | Wireless |
| 503-231 | Portland | Multnomah | Landline |
| 503-761 | Portland | Multnomah | Landline |