Lista regionu
- L3K 1Y5 - Port Colborne, Niagara, Ontario
- L3K 1Y6 - Port Colborne, Niagara, Ontario
- L3K 1Y7 - Port Colborne, Niagara, Ontario
- L3K 1Y8 - Port Colborne, Niagara, Ontario
- L3K 1Y9 - Port Colborne, Niagara, Ontario
- L3K 1Z1 - Port Colborne, Niagara, Ontario
- L3K 1Z2 - Port Colborne, Niagara, Ontario
- L3K 1Z3 - Port Colborne, Niagara, Ontario
- L3K 1Z4 - Port Colborne, Niagara, Ontario
- L3K 1Z5 - Port Colborne, Niagara, Ontario
- L3K 1Z6 - Port Colborne, Niagara, Ontario
- L3K 1Z7 - Port Colborne, Niagara, Ontario
- L3K 1Z8 - Port Colborne, Niagara, Ontario
- L3K 1Z9 - Port Colborne, Niagara, Ontario
- L3K 2A1 - Port Colborne, Niagara, Ontario
- L3K 2A2 - Port Colborne, Niagara, Ontario
- L3K 2A3 - Port Colborne, Niagara, Ontario
- L3K 2A4 - Port Colborne, Niagara, Ontario
- L3K 2A5 - Port Colborne, Niagara, Ontario
- L3K 2A6 - Port Colborne, Niagara, Ontario