Regionlista
- L4P 0C4 - Keswick, York, Ontario
- L4P 0C5 - Keswick, York, Ontario
- L4P 0C6 - Keswick, York, Ontario
- L4P 0C7 - Keswick, York, Ontario
- L4P 0C8 - Keswick, York, Ontario
- L4P 0C9 - Keswick, York, Ontario
- L4P 0E1 - Keswick, York, Ontario
- L4P 0E2 - Keswick, York, Ontario
- L4P 1A1 - Keswick, York, Ontario
- L4P 1A2 - Keswick, York, Ontario
- L4P 1A3 - Keswick, York, Ontario
- L4P 1A4 - Keswick, York, Ontario
- L4P 1A5 - Keswick, York, Ontario
- L4P 1A6 - Keswick, York, Ontario
- L4P 1A7 - Keswick, York, Ontario
- L4P 1A8 - Keswick, York, Ontario
- L4P 1A9 - Keswick, York, Ontario
- L4P 1B1 - Keswick, York, Ontario
- L4P 1B2 - Keswick, York, Ontario
- L4P 1B3 - Keswick, York, Ontario