N0A
West Haldimand
(Port Dover)

N1A
Dunnville

N2A
Kitchener
East

N3A
Baden

N4A
Not assigned

N5A
Stratford
North

N6A
London
North Thames River →
Colborne →
Pall Mall →
Wellington →
CN Railway

N7A
Goderich

N8A
Wallaceburg

N9A
Windsor
Detroit River →
Lincoln →
Giles →
Penn Central Railway

N0B
Wellington
(Elora)

N1B
Not assigned

N2B
Kitchener
Northeast

N3B
Elmira

N4B
Delhi

N5B
Not assigned

N6B
London
Pall Mall →
CP Railway →
Adelaide →
South Thames River →
CN Railway →
Wellington

N7B
Not assigned

N8B
Not assigned

N9B
Windsor
Detroit River →
Penn Central Railway →
Cleary →
Longfellow →
Northwood →
Dominion →
Huron Church

N0C
Georgian Bay Southwest Shore
(Dundalk)

N1C
Guelph
South

N2C
Kitchener
South Central

N3C
Cambridge
Northeast

N4C
Not assigned

N5C
Ingersoll

N6C
London
South Thames River →
CN River →
Southdale →
Wharncliffe

N7C
Not assigned

N8C
Not assigned

N9C
Windsor
Detroit River →
Huron Church →
Continental →
Malden →
Titcombe →
Machette →
Ojibway →
Broadway →
Sandwich

N0E
Brant and Norfolk
(Waterford)

N1E
Guelph
North

N2E
Kitchener
Southwest

N3E
Cambridge
Northwest

N4E
Not assigned

N5E
Not assigned

N6E
London
Southdale →
Pond Mills →
ON 401 →
Wellington South →
Scotland →
White Oak

N7E
Not assigned

N8E
Not assigned

N9E
Windsor
Cleary →
Dominion →
Northwood →
Longfellow →
Penn Central Railway →
Cabana →
Fourteenth →
Rickard →
Malden →
Continental →
Huron Church

N0G
Huron
(Wingham)

N1G
Guelph
Central

N2G
Kitchener
Central

N3G
Not assigned

N4G
Tillsonburg

N5G
Not assigned

N6G
London
City limit →
Richmond →
North Thames River →
CP Railway →
Hyde Park

N7G
Strathroy

N8G
Not assigned

N9G
Windsor
Cabana →
Penn Central Railway →
ON 401 →
Talbot

N0H
Bruce Peninsula
(Wiarton)

N1H
Guelph
Northwest

N2H
Kitchener
North Central

N3H
Cambridge
West

N4H
Not assigned

N5H
Aylmer

N6H
London
City Limit →
Hyde Park →
CP Railway →
Thames River

N7H
Not assigned

N8H
Leamington

N9H
Windsor
Fourteenth →
Talbot →
Outer →
Howard →
Townline →
Disputed →
Bouffard →
Malden

N0J
Oxford
(Norwich)

N1J
Not assigned

N2J
Waterloo
Southeast

N3J
Not assigned

N4J
Not assigned

N5J
Not assigned

N6J
London
Thames River →
Wharncliffe →
Southdale →
Wonderland South

N7J
Not assigned

N8J
Not assigned

N9J
Windsor
Broadway →
Ojibway →
Machette →
Titcombe →
Malden →
Bouffard →
Disputed →
Townline →
Detroit River

N0K
Perth
(Mitchell)

N1K
Guelph
West

N2K
Kitchener
North

N3K
Not assigned

N4K
Owen Sound

N5K
Not assigned

N6K
London
Thames River →
Wonderland South →
Southdale →
Westdel Bourne →
ON 2 →
City limit

N7K
Not assigned

N8K
Not assigned

N9K
Windsor
ON 2 →
Manning →
CN Railway →
Pike West →
CP Railway →
Suncrest →
County 42 →
Lesperance

N0L
Elgin
(Dorchester)

N1L
Guelph
East

N2L
Waterloo
South

N3L
Paris

N4L
Meaford

N5L
Port Stanley

N6L
London
Southdale →
White Oak →
ON 401 →
Scotland →
Wellington South →
Sminster Bourne →
Wonderland South

N7L
Chatham
Northwest

N8L
Not assigned

N9L
Not assigned

N0M
Middlesex
(Clinton)

N1M
Fergus

N2M
Kitchener
Northwest

N3M
Not assigned

N4M
Not assigned

N5M
Not assigned

N6M
London
South Thames River →
Airport →
Gore →
Trafalgar →
Crumlin →
Kellerton →
Vaughan →
Dundas →
Waubuno Creek →
Travelled →
City limit →
ON 401 →
Highbury

N7M
Chatham
Southeast

N8M
Essex

N9M
Not assigned

N0N
Lambton
(Forest)

N1N
Not assigned

N2N
Kitchener
West

N3N
Not assigned

N4N
Hanover

N5N
Not assigned

N6N
London
ON 401 →
City limit →
Willsie Bourne →
Webber Bourne →
Reggan Bourne →
Wellington South

N7N
Not assigned

N8N
Windsor
Lake St. Clair →
Patillo →
County 42 →
Suncrest →
CP Railway →
Pike West →
CN Railway →
Manning →
ON 2 →
Lesperance →
Lauzon →
E.C. Row East →
Laramie →
St. Thomas →
Gauthier →
Kenney →
Dillon →
Chene

N9N
Not assigned

N0P
Kent
(Blenheim)

N1P
Cambridge
South

N2P
Kitchener
Southeast

N3P
Brantford
Northeast

N4P
Not assigned

N5P
St. Thomas
North

N6P
London
ON 2 →
Westdel Bourne →
Southdale →
Wonderland South →
Wharncliffe →
Bostwick →
ON 401 →
City limit

N7P
Not assigned

N8P
Windsor
Lake St. Clair →
Chene →
Dillon →
Kenney →
Gauthier →
St. Thomas →
Laramie →
CN Railway →
Little River

N9P
Not assigned

N0R
Essex
(Belle River)

N1R
Cambridge
Central

N2R
Kitchener
South

N3R
Brantford
Central

N4R
Not assigned

N5R
St. Thomas
South

N6R
Not assigned

N7R
Not assigned

N8R
Windsor
CN Railway →
E.C. Row East →
Lauzon

N9R
Not assigned

N0S
Not assigned

N1S
Cambridge
Southwest

N2S
Not assigned

N3S
Brantford
Southeast

N4S
Woodstock
Central

N5S
Not assigned

N6S
Not assigned

N7S
Sarnia
Central

N8S
Windsor
Lake St. Clair →
Little River →
CN Railway →
Westminster

N9S
Not assigned

N0T
Not assigned

N1T
Cambridge
East

N2T
Waterloo
Southwest

N3T
Brantford
Southwest

N4T
Woodstock
North

N5T
Not assigned

N6T
Not assigned

N7T
Sarnia
Southwest

N8T
Windsor
CN Railway →
Lauzon →
CP Railway →
Pillette →
Milloy →
Westminster

N9T
Not assigned

N0V
Not assigned

N1V
Not assigned

N2V
Waterloo
Northwest

N3V
Brantford
Northwest

N4V
Woodstock
South

N5V
London
North Thames River →
City limit →
Robin Hill →
Nissouri →
Dundas →
Vaughan →
Kellerton →
Crumlin →
Trafalgar →
Airport →
Gore →
CN River →
Clarke Side →
CP Railway →
Highbury

N6V
Not assigned

N7V
Sarnia
Northwest

N8V
Windsor
CP Railway →
Lauzon →
County 42 →
C&O Railway →
Airport →
Pilette

N9V
Amherstburg

N0W
Not assigned

N1W
Not assigned

N2W
Not assigned

N3W
Caledonia

N4W
Listowel

N5W
London
CP Railway →
Clarke Side →
CN Railway →
Airport →
South Thames River →
Highbury →
CN River →
Adelaide

N6W
Not assigned

N7W
Sarnia
Southeast

N8W
Windsor
C&O Railway →
Milloy →
Pillette →
Airport →
Penn Centrail Railway →
Marentette →
Foster →
Devon →
Langlois →
Grand Marais East →
South Pacific →
Lillian →
Louis →
Essex Terminal Railway

N9W
Not assigned

N0X
Not assigned

N1X
Not assigned

N2X
Not assigned

N3X
Not assigned

N4X
St. Mary's

N5X
London
City limit →
Fanshawe Lake →
North Thames River →
Richmond

N6X
Not assigned

N7X
Sarnia
Northeast

N8X
Windsor
Giles →
Lincoln →
Essex Terminal Railway →
Louis →
Lillian →
South Pacific →
Grand Marais East →
Langlois →
Devon →
Foster →
Marentette →
Penn Central Railway

N9X
Not assigned

N0Y
Not assigned

N1Y
Not assigned

N2Y
Not assigned

N3Y
Simcoe

N4Y
Not assigned

N5Y
London
North Thames River →
Highbury →
CP Railway →
Colborne

N6Y
Not assigned

N7Y
Not assigned

N8Y
Windsor
Lake St. Clair →
Westminster →
Milloy →
C&O Railway →
Essex Terminal Railway →
Lincoln

N9Y
Kingsville

N0Z
Not assigned

N1Z
Not assigned

N2Z
Kincardine

N3Z
Not assigned

N4Z
Stratford
South

N5Z
London
CN Railway →
Highbury →
ON 401 →
Pond Mills →
CN River →
South Thames River →
Adelaide

N6Z
Not assigned

N7Z
Not assigned

N8Z
Not assigned

N9Z
Not assigned