Regiolijst
- L3B 1X1 - Welland, Niagara, Ontario
- L3B 1X2 - Welland, Niagara, Ontario
- L3B 1X3 - Welland, Niagara, Ontario
- L3B 1X4 - Welland, Niagara, Ontario
- L3B 1X5 - Welland, Niagara, Ontario
- L3B 1X6 - Welland, Niagara, Ontario
- L3B 1X7 - Welland, Niagara, Ontario
- L3B 1X8 - Welland, Niagara, Ontario
- L3B 1X9 - Welland, Niagara, Ontario
- L3B 1Y1 - Welland, Niagara, Ontario
- L3B 1Y2 - Welland, Niagara, Ontario
- L3B 1Y3 - Welland, Niagara, Ontario
- L3B 1Y4 - Welland, Niagara, Ontario
- L3B 1Y5 - Welland, Niagara, Ontario
- L3B 1Y6 - Welland, Niagara, Ontario
- L3B 1Y7 - Welland, Niagara, Ontario
- L3B 1Y8 - Welland, Niagara, Ontario
- L3B 1Y9 - Welland, Niagara, Ontario
- L3B 1Z1 - Welland, Niagara, Ontario
- L3B 1Z2 - Welland, Niagara, Ontario