K1A Government of Canada Ottawa and Gatineau offices (partly in QC) | K2A Ottawa (Highland Park / McKellar Heights / McKellar Park / Glabar Park / Carlingwood) | K4A Ottawa (Fallingbrook) | K6A Hawkesbury | K7A Smiths Falls | K8A Pembroke Central and northern subdivisions | K9A Cobourg |
K1B Ottawa (Blackburn Hamlet / Pine View / Sheffield Glen) | K2B Ottawa (Britannia / Foster Farm / Queensway Terrace North / Whitehaven / Bayshore / Woodpark) | K4B Ottawa (Navan) | K6B Not assigned | K7B Not assigned | K8B Pembroke (Pleasant View / Fairview) | K9B Not assigned |
K1C Ottawa (Orleans West) (Chapel Hill, Chateauneuf, Convent Glen, Hiawatha Park, Orleans Village, Orleans Wood) | K2C Ottawa (Queensway Terrace South / Ridgeview / Parkway Park / Kenson Park / Bel-Air Park / Braemar Park / Bel-Air Heights / Copeland Park / Central Park / Carleton Heights / Carleton University) | K4C Ottawa (Cumberland) | K6C Not assigned | K7C Carleton Place | K8C Not assigned | K9C Not assigned |
K1E Ottawa (Orleans Central) (Queenswood Heights, Queenswood Village) | K2E Ottawa (Nepean East) (Skyline / Fisher Heights/ Parkwood Hills / Stewart Farm / Borden Farm / Fisher Glen / CitiPlace / Pineglen, Clearview / Country Place) | K4E Not assigned | K6E Not assigned | K7E Not assigned | K8E Not assigned | K9E Not assigned |
K1G Ottawa (Eastway Gardens / Riverview / Hawthorne / Elmvale Acres / Canterbury / Hunt Club Park) | K2G Ottawa (Nepean Central) Briargreen, Centrepointe, Ryan Farm, Algonquin College, Meadowlands, City View, Crestview, Craig Henry, Woodvale, Manordale, Tangelwood, Merivale Gardens, Grenfell Glen, Ashdale, Rideau Glen, Davidson Heights, Havenlea) | K4G Not assigned | K6G Not assigned | K7G Gananoque | K8G Not assigned | K9G Not assigned |
K1H Ottawa (Alta Vista / Billings Bridge) | K2H Ottawa (Bells Corners / Trend-Arlington / Redwood / Qualicum-Graham Park / Leslie Park / Crystal Beach / Lakeview / Rocky Point / Crystal Bay) | K4H Not assigned | K6H Cornwall East | K7H Perth | K8H Petawawa | K9H Peterborough Central |
K1J Ottawa (Beacon Hill / Cyrville / Carson Grove) | K2J Ottawa (Barrhaven) | K4J Not assigned | K6J Cornwall West | K7J Not assigned | K8J Not assigned | K9J Peterborough South |
K1K Ottawa (Overbrook, Forbes, Manor Park, Viscount Alexander Park, Carson Meadows) | K2K Ottawa (Kanata North) (Beaverbrook / Morgan's Grant / Briar Brook / Kanata Lakes) | K4K Rockland | K6K Cornwall North | K7K Kingston Main (SW Pittsburgh Township, CFB Kingston, Kingscourt, Rideau Heights) | K8K Not assigned | K9K Peterborough (Fairbairn Meadows / Jackson Heights) |
K1L Ottawa (Vanier, McKay Lake area)
| K2L Ottawa (Kanata Central) (Katimavik-Hazeldean / Glen Cairn) | K4L Not assigned | K6L Not assigned | K7L Kingston Main (Downtown, area bounded by Princess St., Sir John A. MacDonald Blvd and Lake Ontario) | K8L Not assigned | K9L Peterborough (Terra View Heights / Woodland Acres / Donwood) |
K1M Ottawa (Rockcliffe Park / New Edinburgh / Lindenlea) | K2M Ottawa (Kanata South) (Bridlewood, Trailwest, Blackstone) | K4M Ottawa (Manotick) | K6M Not assigned | K7M Kingston Station "A" (Portsmouth, Reddendale / Cataraqui / Collins Bay) | K8M Not assigned | K9M Not assigned |
K1N Ottawa (Lower Town / ByWard Market / Sandy Hill / University of Ottawa) | K2N Not assigned | K4N Not assigned | K6N Not assigned | K7N Amherstview (Kingston) | K8N Belleville East
Canadian Forces (Army / RCAF / CANCOM) | K9N Not assigned |
K1P Ottawa (Downtown) | K2P Ottawa (Centretown) | K4P Ottawa (Greely) | K6P Not assigned | K7P Kingston Station "A" (Westbrook / Cataraqui Woods / Cedarwood) | K8P Belleville West | K9P Not assigned |
K1R Ottawa (Centretown West / Chinatown / LeBreton Flats / Little Italy) | K2R Ottawa (Fallowfield Village / Cedarhill Estates / Orchard Estates) | K4R Russell | K6R Not assigned | K7R Napanee | K8R Belleville (SE Sidney Township / Avondale) | K9R Not assigned |
K1S Ottawa (The Glebe / Old Ottawa South / Old Ottawa East / Glebe Annex) | K2S Ottawa (Stittsville, Huntley, Healey's Heath, Stanley Corners, Mansfield, Bridlewood Trails) | K4S Not assigned | K6S Not assigned | K7S Arnprior | K8S Not assigned | K9S Not assigned |
K1T Ottawa (Blossom Park / Greenboro / Leitrim / Findlay Creek) | K2T Ottawa (Kanata West) (Marchwood, Kanata Estates, Richardson Estates, Heritage Hills, Arcadia) | K4T Not assigned | K6T Elizabethtown-Kitley (Brockville) | K7T Not assigned | K8T Not assigned | K9T Not assigned |
K1V Ottawa (Cedardale, Ellwood / Heron Gate / Heron Park / Riverside Park / Honey Gables / Hunt Club / Ridgemont / Riverside South / South Keys / Uplands) | K2V Ottawa (Bradley Commons, Fernbank Crossing, Abbottsville Crossing) | K4V Not assigned | K6V Brockville | K7V Renfrew | K8V Trenton | K9V Lindsay |
K1W Ottawa (Orleans Southwest) (Bradley Estates / Chapel Hill South / Blackburn / Trailsedge) | K2W Ottawa (March) (South March / Brookside / Marchhurst / Harwood Plains) | K4W Not assigned | K6W Not assigned | K7W Not assigned | K8W Not assigned | K9W Not assigned |
K1X Ottawa (South Gloucester) (Ficko) | K2X Not assigned | K4X Not assigned | K6X Not assigned | K7X Not assigned | K8X Not assigned | K9X Not assigned |
K1Y Ottawa (Civic Hospital / Wellington Village / Hintonburg / Mechanicsville / Champlain Park / Tunney's Pasture) | K2Y Not assigned | K4Y Not assigned | K6Y Not assigned | K7Y Not assigned | K8Y Not assigned | K9Y Not assigned |
K1Z Ottawa (Westboro / Carlington) | K2Z Not assigned | K4Z Not assigned | K6Z Not assigned | K7Z Not assigned | K8Z Not assigned | K9Z Not assigned |