| Localité | Code postal |
|---|---|
| Alvinston, Lambton | N0N |
| Arkona, Lambton | N0M 1B0 |
| Brigden, Lambton | N0N 1B0 |
| Bright's Grove, Lambton | N0N |
| Camlachie, Lambton | N0N |
| Corunna, Lambton | N0N |
| Courtright, Lambton | N0N |
| Florence, Lambton | N0P 1R0 |
| Forest, Lambton | N0N |
| Grand Bend, Lambton | N0M |
| Inwood, Lambton | N0N 1K0 |
| Kettle and Stony Point, Lambton | N0N 1J1 |
| Lambton Shores, Lambton | N0N |
| Mooretown, Lambton | N0N 1M0 |
| Oil City, Lambton | N0N 1N0 |
| Oil Springs, Lambton | N0N |
| Petrolia, Lambton | N0N |
| Plympton-Wyoming, Lambton | N0N |
| Point Edward, Lambton | N7T, N7V |
| Port Franks, Lambton | N0M 2L0 |
| Port Lambton, Lambton | N0P |
| Sarnia, Lambton | N7S, N7T, N7V, N7W, N7X |
| Sombra, Lambton | N0P |
| Thedford, Lambton | N0M |
| Warwick Township, Lambton | N0N |
| Watford, Lambton | N0M |