List of Ontario separated municipalities
In the Canadian province of Ontario, municipalities operate in various hierarchies. Though most originated from a two-tier arrangement of a county containing smaller divisions, there are now single-tier cities made entirely of former counties, regional municipalities, and other arrangements, all under the direction of the provincial government.
One arrangement, which is becoming more common, is to separate larger, denser towns and cities from their more rural counties and regions. While they no longer share in the administration of the wider area, relationships are usually maintained, and civic offices and other infrastructure may remain within the boundaries of the separated town.
Unlike a single-tier municipality or a region, a separated municipality does not form its own separate census division; it remains a census subdivision of the county. Hence, its separation from the county is only administrative.
The following list shows the separated municipalities and the counties in which they were once part:
|Elgin County||St. Thomas||Southwestern||Southern|
|Hastings County||Belleville, Quinte West||Central||Southern|
|Lanark County||Smiths Falls||Eastern||Southern|
|United Counties of Leeds and Grenville||Brockville||Gananoque, Prescott||Eastern||Southern|
|Perth County||Stratford||St. Marys||Southwestern||Southern|
|Simcoe County||Barrie, Orillia||Central||Southern|
|United Counties of Stormont, Dundas and Glengarry||Cornwall||Eastern||Southern|
A case predating that trend was the split of York County in 1954. The southernmost section became Metropolitan Toronto, now the city of Toronto, and the remainder eventually became York Region. However, Toronto was considered a separate census division; the above municipalities are still considered to be within the census division from which they separated. Other former separated municipalities are Hamilton and St. Catharines, which rejoined their county upon their re-incorporation as a regional municipality.