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Addington
Created in 1792 (merged with Lennox County in 1800)
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Midland 1792-1800
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Brant
Created in 1851 from Wentworth and Halton Counties
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(no corresponding district)
|
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Bruce
Created in 1850
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(no corresponding district)
|
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Carleton
Created in 1800 from Dundas and Grenville Counties
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Johnstown 1800-1822
Bathurst 1822-1838
Dalhousie 1838-1849 |
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Dufferin
Created in 1874 from Grey, Simcoe and Wellington Counties)
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(no corresponding district)
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Dundas
Created in 1792
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Eastern 1792-1849 |
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Durham
Created in 1792
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Home 1792-1802
Newcastle 1802-1849 |
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Elgin
Created in 1851 from Middlesex County
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(no corresponding district) |
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Essex
Created in 1792
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Western 1792-1849 |
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Frontenac
Created in 1792
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Midland 1792-1849 |
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Glengarry
Created in 1792
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Eastern 1792-1849 |
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Grenville
Created in 1792
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Eastern 1792-1800
Johnstown 1800-1849 |
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Grey
Created in 1851 from Simcoe County
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(no corresponding district)
|
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Haldimand
Created in 1800 from Norfolk
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Niagara 1800-1849 |
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Haliburton
Created in 1874
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(no corresponding district) |
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Halton
Created in 1816 from York County (West Riding)
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Gore 1816-1849 |
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Hastings
Created in 1792
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Midland 1792-1839
Victoria 1839-1849 |
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Huron
Created in 1835 from London District
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London 1835-1841
Huron 1841-1849 |
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Kent
Created in 1792
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Western 1792-1849 |
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Lambton
Created in 1850 from Kent County
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(no corresponding district) |
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Lanark
Created in 1824 from Leeds County
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Bathurst 1824-1849 |
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Leeds
Created in 1792
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Eastern 1792-1800
Johnstown 1800 -1849 |
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Lennox
Created in 1792 (merged with Addington County in 1800)
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Midland 1792-1800 |
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Lincoln
Created from 1792
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Home 1792-1800
Niagara 1800-1849 |
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Middlesex
Created in 1800
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London 1800-1849 |
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Norfolk
Created in 1792
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Home [part] and
Western [part] 1792-1800
London 1800-1837
Talbot 1837-1849 |
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Northumberland
Created in 1792
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Home 1792-1802
Newcastle 1802-1849 |
| Ontario
(comprised of the islands in the St. Lawrence River)
Created in 1792 (abolished in 1800) |
Midland 1792-1800 |
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Ontario
Created in 1851 from York County (East Riding)
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(no corresponding district) |
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Oxford
Created in 1800
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London 1800-1839
Brock 1839-1849 |
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Peel
Created in 1851 from York County (East Riding)
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(no corresponding district) |
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Perth
Created in 1849
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Huron 1849 |
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Peterborough
Created in 1838 from Durham and Northumberland Counties
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Newcastle 1838-1841
Colborne 1841-1849 |
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Prescott
Created in 1800 from Glengarry County
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Eastern 1800-1816
Ottawa 1816-1849 |
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Prince Edward
Created in 1792
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Midland 1792-1834
Prince Edward 1834-1849 |
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Renfrew
Created in 1845 from Lanark County
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Bathurst 1845-1849 |
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Russell
Created in 1800 from Stormont County
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Eastern 1800-1816
Ottawa 1816-1849 |
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Simcoe
Created in 1792
|
Home 1821-1843
Simcoe 1843-1849 |
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Stormont
Created in1792
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Eastern 1792-1849 |
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Victoria
Created in 1851 from Peterborough County
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(no corresponding district) |
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Waterloo
Created in 1840 from Halton, Huron and Simcoe Counties
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Wellington 1840-1849 |
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Welland
Created in 1845 from Lincoln County
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Niagara 1845-1849 |
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Wellington
Created in 1851 from Waterloo County
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(no corresponding district) |
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Wentworth
Created in 1816 from Haldimand, Lincoln and York (West
Riding) Counties
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Gore 1816-1849 |
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York
Created in 1792
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Home 1792-1849 |
