N7 — 9 codes dans 9 localités (Canada).
| Code postal | Localité / Quartier | Zone administrative | Coordonnées |
|---|---|---|---|
| Goderich | Ontario | 43.7501, -81.7165 | |
| Strathroy | Ontario | 42.9551, -81.6223 | |
| Chatham Northwest | Chatham · Ontario | 42.4209, -82.1993 | |
| Chatham Southeast | Chatham · Ontario | 42.4238, -82.1183 | |
| Sarnia Central | Sarnia · Ontario | 42.9888, -82.3592 | |
| Sarnia Southwest | Sarnia · Ontario | 42.9578, -82.2777 | |
| Sarnia Northwest | Sarnia · Ontario | 42.9998, -82.3926 | |
| Sarnia Southeast | Sarnia · Ontario | 42.9644, -82.3259 | |
| Sarnia Northeast | Sarnia · Ontario | 43.0214, -82.3212 |