Ontario, OR Area Codes
Ontario is served by area codes 458 and 541. It is in Oregon, Malheur County. About 19,713 people live in its 1 ZIP codes.
| Field | Value |
|---|---|
| Area code(s) | 458, 541 |
| State / province | Oregon |
| County | Malheur County |
| Population | 19,713 |
| ZIP codes | 1 |
| Time zone | Mountain |
| Coordinates | 44.1116, -117.0799 |
What area code is Ontario in?
ZIP codes in the code footprint
Nearby towns and their area codes
Baker City 458, 541La Grande 458, 541Pendleton 458, 541Milton Freewater 458, 541Hermiston 458, 541Prineville 458, 541Madras 458, 541Redmond 458, 541
How to dial
Dial 458 + 7 digits for a number in Ontario, or +1 458 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.