
The Bathurst District was a historic district in Upper Canada. It was created in 1822 from the Johnstown District. Containing Carleton County, it existed until 1849. The district town was Perth.

Oxford County is a regional municipality in the Canadian province of Ontario. Highway 401 runs east–west through the centre of the county, creating an urban industrial corridor with more than half the county's population, spanning 25 km between the Toyota auto assembly plant in Woodstock and the CAMI General Motors auto assembly plant in Ingersoll. The local economy is otherwise dominated by agriculture, especially the dairy industry.

Peterborough County is located in Southern Ontario, Canada. The county seat is Peterborough, which is independent of the county.

The Dalhousie District was a historic district in Upper Canada which existed until 1849. It was created in 1838 from Carleton County in the Bathurst District. Townships from the Johnstown and Ottawa districts were added to Carleton County at the same time.

Eastern District was one of four districts of the Province of Quebec created in 1788 in the western reaches of the Montreal District and partitioned in 1791 to create the new colony of Upper Canada.

The Gore District was a historic district in Upper Canada which existed until 1849. It was formed in 1816 from parts of York County in the Home District and parts of the Niagara District. The district town was Hamilton.

The Home District was one of four districts of the Province of Quebec created in 1788 in the western reaches of the Montreal District and detached in 1791 to create the new colony of Upper Canada. It was abolished with the adoption of the county system in 1849.

Huron County is a county of the province of Ontario, Canada. It is located on the southeast shore of its namesake, Lake Huron, in the southwest part of the province. The county seat is Goderich, also the county's largest community.

The Johnstown District was a historic district in Upper Canada which existed until 1849.

The London District was a historic district in Upper Canada. It was formed in 1798 from parts of the Home and Western Districts, and lasted until its abolition in 1850.

Midland District was one of four districts of the Province of Quebec created in 1788 in the western reaches of the Montreal District and partitioned in 1791 to create the new colony of Upper Canada.

The Newcastle District was a historic district in Upper Canada which existed until 1849. It was formed in 1802 from the Home District, consisting of the counties of Durham and Northumberland.

The Niagara District was a historic district in Upper Canada. Created in 1798 from the Home District, it existed until 1849.

The Ottawa District was a historic district in Upper Canada which existed until 1849. It was created in 1816 by splitting the counties of Prescott and Russell from the Eastern District. The district town was L'Orignal.

Prince Edward County is city, single-tier municipality and a census division of the Canadian province of Ontario.

Simcoe County is located in the central portion of Southern Ontario, Canada. The county is just north of the Greater Toronto Area, stretching from the shores of Lake Simcoe in the east to Georgian Bay in the west. Simcoe County forms part of the Greater Golden Horseshoe area, a densely populated and industrialized region, centred on the Greater Toronto Area.

Hastings County is located in the province of Ontario, Canada. Geographically, it is located on the border of Eastern Ontario and Central Ontario. Hastings County is the second largest county in Ontario. The county seat is Belleville, which is independent of Hastings County. Hastings County has trademarked the moniker "Cheese Capital of Canada".

The Wellington District was a historic district in Upper Canada which existed until 1849. It was formed in June 1840 from townships transferred from certain other districts:

Western District was one of four districts of the Province of Quebec created in 1788 in the western reaches of the Montreal District which were later detached in 1791 to create the new colony of Upper Canada. Known as Hesse District until 1792, it was abolished in 1849.