72 registered streets starting with "O"
| Street Name | Grade | Buildings |
|---|---|---|
| Osgood Avenue | B | 11 |
| Osman Place | A | 2 |
| Oswego Street | B | 2 |
| Otis Avenue | A | 31 |
| Outlook Avenue | A | 7 |
| Overing Street | B | 17 |
| Overlook Avenue | A | 3 |
| Overlook Terrace | F | 7 |
| Ovington Avenue | B | 61 |
| Owls Head Court | B | 19 |
| Oxford Avenue | F | 9 |
| Oxford Place | B | 5 |