L0A West Northumberland County (Millbrook)

L1A Port Hope L0B East Durham Regional Municipality (Orono) L1B Bowmanville East L1C Bowmanville West K9K Peterborough (Fairbairn Meadows / Jackson Heights)

K9H Peterborough North K9L Peterborough (Terra View Heights / Woodland Acres / Donwood) K9V Lindsay K9J Peterborough South L1E Courtice L1K Oshawa East L1H Oshawa Southeast K9A Cobourg L9L Port Perry L1L Oshawa North L1G Oshawa Central L1J Oshawa Southwest L1R Whitby Central L1M Whitby North L1N Whitby Southeast L0C West Durham Regional Municipality (Sunderland) L1P Whitby Southwest L1Z Ajax East L9P Uxbridge

L1T Ajax Northwest L1S Ajax Southwest L1Y Pickering North L1X Pickering Central L1W Pickering South L0H Whitby Region (Gormley) L1V Pickering Southwest L4A Stouffville L6B Markham East M1C Scarborough (Rouge Hill / Port Union / Highland Creek) M1X Scarborough (Upper Rouge) L0E Lake Simcoe Southeast Shore (Sutton West) M1B Scarborough (Malvern / Rouge River) L6E Markham Northeast L3P Markham Central M1E Scarborough (Guildwood / Morningside / Ellesmere) L3S Markham Southeast M1G Scarborough (Woburn) M1H Scarborough (Cedarbrae) M1V Scarborough (Milliken / Agincourt North / Steeles East / L'Amoreaux East) M7Y East Toronto Business Reply Mail Processing Centre 969 Eastern (Enclave of M4L) L6C Markham Northwest M1S Scarborough (Agincourt) M1J Scarborough (Eglinton) L3R Markham Outer Southwest L6G Markham Inner Southwest M1M Scarborough (Cliffside / Cliffcrest / Scarborough Village West) M1P Scarborough (Dorset Park / Wexford Heights / Scarborough Town Centre) L0K Lake Simcoe North Shore (Coldwater) M1T Scarborough (Clarks Corners / Tam O'Shanter / Sullivan) M1W Scarborough (Steeles West / L'Amoreaux West) M1K Scarborough (Kennedy Park / Ionview / East Birchmount Park) L3Y Newmarket Northeast M1R Scarborough (Wexford / Maryvale) K8V Trenton L4S Richmond Hill Central L4E Richmond Hill North M2H North York (Hillcrest Village) L4B Richmond Hill Southeast M1N Scarborough (Birch Cliff / Cliffside West)