Canada Post provides a free postal code look-up tool on its website,[1] via its smartphone applications for iPhone and Android,[2] and sells hard-copy directories and CD-ROMs.
1A0: Ashburn 1B0: Blackstock 1C0: Brooklin* 1E0: Caesarea 1J0: Hampton 1K0: Janetville 1L0: Nestleton Station 1M0: Orono 1N0: Port Perry* 1P0: Prince Albert*
1A0: Beeton 1B0: Bond Head 1C0: Bradford* 1E0: Cedar Valley 1H0: Holland Landing* 1J0: Kettleby* 1K0: King City* 1L0: Loretto 1M0: Mount Albert 1N0: Nobleton 1P0: Oak Ridges* 1R0: Queensville 1S0: River Drive Park* 1T0: Schomberg 1V0: Sharon 1W0: Tottenham 1X0: Lake Wilcox* 1Y0: Holland Landing*
1A0: Bolton* 1B0: Campbellville 1C0: Cheltenham* 1E0: Hornby 1G0: Kilbride* 1H0: Limehouse 1J0: Moffat 1K0: Norval 1M0: Brampton (Snelgrove)* 1N0: Terra Cotta 1R0: Acton*
1A0: Allanburg 1B0: Crystal Beach 1C0: Fenwick 1E0: Fonthill 1J0: Niagara on the Lake 1K0: Port Robinson 1L0: Queenston 1M0: Ridgeville 1N0: Ridgeway 1P0: St. David's 1R0: Sherkston 1S0: Stevensville 1T0: Virgil 1V0: Wainfleet