Regionlista
- L4P 3P7 - Keswick, York, Ontario
- L4P 3P8 - Keswick, York, Ontario
- L4P 3P9 - Keswick, York, Ontario
- L4P 3R1 - Keswick, York, Ontario
- L4P 3R2 - Keswick, York, Ontario
- L4P 3R3 - Keswick, York, Ontario
- L4P 3R4 - Keswick, York, Ontario
- L4P 3R5 - Keswick, York, Ontario
- L4P 3R6 - Keswick, York, Ontario
- L4P 3R7 - Keswick, York, Ontario
- L4P 3R8 - Keswick, York, Ontario
- L4P 3R9 - Keswick, York, Ontario
- L4P 3S1 - Keswick, York, Ontario
- L4P 3S2 - Keswick, York, Ontario
- L4P 3S3 - Keswick, York, Ontario
- L4P 3S4 - Keswick, York, Ontario
- L4P 3S5 - Keswick, York, Ontario
- L4P 3S6 - Keswick, York, Ontario
- L4P 3S7 - Keswick, York, Ontario
- L4P 3S8 - Keswick, York, Ontario