Список региона
- L3K 1P4 - Port Colborne, Niagara, Ontario
- L3K 1P5 - Port Colborne, Niagara, Ontario
- L3K 1P6 - Port Colborne, Niagara, Ontario
- L3K 1P7 - Port Colborne, Niagara, Ontario
- L3K 1P8 - Port Colborne, Niagara, Ontario
- L3K 1P9 - Port Colborne, Niagara, Ontario
- L3K 1R1 - Port Colborne, Niagara, Ontario
- L3K 1R2 - Port Colborne, Niagara, Ontario
- L3K 1R3 - Port Colborne, Niagara, Ontario
- L3K 1R4 - Port Colborne, Niagara, Ontario
- L3K 1R5 - Port Colborne, Niagara, Ontario
- L3K 1R6 - Port Colborne, Niagara, Ontario
- L3K 1R7 - Port Colborne, Niagara, Ontario
- L3K 1R8 - Port Colborne, Niagara, Ontario
- L3K 1R9 - Port Colborne, Niagara, Ontario
- L3K 1S1 - Port Colborne, Niagara, Ontario
- L3K 1S2 - Port Colborne, Niagara, Ontario
- L3K 1S3 - Port Colborne, Niagara, Ontario
- L3K 1S4 - Port Colborne, Niagara, Ontario
- L3K 1S5 - Port Colborne, Niagara, Ontario