Oshawa, ON Area Codes
Oshawa is served by area codes 289, 365 and 905. It is in Ontario.
| Field | Value |
|---|---|
| Area code(s) | 289, 365, 905 |
| State / province | Ontario |
| ZIP codes | — |
| Time zone | Eastern |
| Coordinates | 43.9001, -78.8496 |
What area code is Oshawa in?
Nearby towns and their area codes
Ajax 289, 905Pickering 289, 905Uxbridge 289, 905Markham 289, 905Richmond Hill 289, 905Toronto 416, 437, 647Newmarket 289, 905Cobourg 289, 905
How to dial
Dial 289 + 7 digits for a number in Oshawa, or +1 289 ... from abroad. Ten-digit dialling is required everywhere in the North American Numbering Plan.