| District of Ontario area codes: 519 | |
|---|---|
| Country | Canada |
| State/Province | Ontario |
| Major City | Comber |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 519-363 | Chesley, ON | Bell Canada | |
| 519-364 | Hanover, ON | Bell Canada | |
| 519-365 | Chatham, ON | Telus Mobility | |
| 519-366 | Cargill, ON | Bell Canada | |
| 519-367 | Mildmay, ON | Wightman Telephone Ltd. | |
| 519-368 | Tiverton, ON | Bruce Municipal Telephone System | |
| 519-369 | Durham, ON | Bell Canada | |
| 519-370 | Owen Sound, ON | Bell Canada | |
| 519-371 | Owen Sound, ON | Bell Canada | |
| 519-372 | Owen Sound, ON | Bell Canada | |
| 519-373 | Owen Sound, ON | Bell Canada | |
| 519-374 | Owen Sound, ON | Bell Canada | |
| 519-375 | Owen Sound, ON | Bell Canada | |
| 519-376 | Owen Sound, ON | Bell Canada | |
| 519-377 | Owen Sound, ON | Telus Mobility | |
| 519-378 | Owen Sound, ON | Bell Canada | |
| 519-379 | Owen Sound, ON | Bell Mobility | |
| 519-380 | Chatham, ON | Bell Canada | |
| 519-381 | Sarnia, ON | Rogers Communications Partnership (wireless) | |
| 519-383 | Sarnia, ON | Bell Canada |
There are 779 prefixes, In the code area, the major cities are Dutton, ON;Teeswater, ON;Wheatley, ON;Goderich, ON. The major city is Dutton.