Lista regionu
- L3M 1M1 - Grimsby, Niagara, Ontario
- L3M 1M2 - Grimsby, Niagara, Ontario
- L3M 1M3 - Grimsby, Niagara, Ontario
- L3M 1M4 - Grimsby, Niagara, Ontario
- L3M 1M5 - Grimsby, Niagara, Ontario
- L3M 1M7 - Grimsby, Niagara, Ontario
- L3M 1M8 - Grimsby, Niagara, Ontario
- L3M 1M9 - Grimsby, Niagara, Ontario
- L3M 1N1 - Grimsby, Niagara, Ontario
- L3M 1N2 - Grimsby, Niagara, Ontario
- L3M 1N3 - Grimsby, Niagara, Ontario
- L3M 1N4 - Grimsby, Niagara, Ontario
- L3M 1N5 - Grimsby, Niagara, Ontario
- L3M 1N6 - Grimsby, Niagara, Ontario
- L3M 1N7 - Grimsby, Niagara, Ontario
- L3M 1N8 - Grimsby, Niagara, Ontario
- L3M 1N9 - Grimsby, Niagara, Ontario
- L3M 1P1 - Grimsby, Niagara, Ontario
- L3M 1P2 - Grimsby, Niagara, Ontario
- L3M 1P3 - Grimsby, Niagara, Ontario