Liste de la région
- L4P 4E2 - Keswick, York, Ontario
- L4P 4E3 - Keswick, York, Ontario
- L4P 4E4 - Keswick, York, Ontario
- L4P 4E5 - Keswick, York, Ontario
- L4P 4E6 - Keswick, York, Ontario
- L4P 4E7 - Keswick, York, Ontario
- L4P 4E8 - Keswick, York, Ontario
- L4P 4E9 - Keswick, York, Ontario
- L4P 4G1 - Keswick, York, Ontario
- L4P 4G2 - Keswick, York, Ontario
- L4P 4G3 - Keswick, York, Ontario
- L4P 4G4 - Keswick, York, Ontario
- L4P 4G5 - Keswick, York, Ontario
- L4P 4G6 - Keswick, York, Ontario
- L4P 4G7 - Keswick, York, Ontario
- L4P 4G8 - Keswick, York, Ontario
- L4P 4G9 - Keswick, York, Ontario
- L4P 4H1 - Keswick, York, Ontario
- L4P 4H2 - Keswick, York, Ontario
- L4P 4H3 - Keswick, York, Ontario