Introduction
Within the Province of Ontario, select census divisions associated with the Province also function as provincial counties, largely located in the portions of Southern Ontario not already included within single-tier or regional municipalities which also exist throughout the area. On the eastern edge of Ontario, three municipalities have united county status.
The Counties
Within Southern Ontario, the associated counties to the west of Toronto include the specific counties named Essex, Lambton, Elgin, Middlesex, Huron, Perth, Wellington, Bruce, Grey, Dufferin, and Simcoe. As would be guessed by the location in the Province of Ontario, each of the county names derives from names associated with the British Isles, whether based on recycled names from Great Britain, notable surnames, or possibly other etymologies.
East of Toronto, the county names are relatively similar and also largely named in a British format, namely Haliburton, Peterborough, Northumberland, Hastings, Renfrew, Lennox and Addington, and Lanark, plus Frontenac County of French etymology.
The United Counties
At the eastern edge of the Province of Ontario, three special cases of united counties also exist by association with the area. The United Counties of Leeds and Grenville are located directly downstream from Frontenac County, while the United Counties of Stormont, Dundas, and Glengarry represent the portion of Ontario located furthest downstream along the Saint Lawrence River. Directly to the north, in the Hawkesbury area, are the United Counties of Prescott and Russell.
County Name Etymologies
With the notable exception of Frontenac County, all Ontarian county names are of British origin. However, the particular countries of origin may be varied based on the specific situation, as follows:
- Essex County: Essex, England
- Lambton County: Lambton surname from Durham, England
- Middlesex County: Middlesex, England (home to London)
- Elgin County: Elgin, Moray, Scotland
- Huron County: Lake Huron (of Indigenous descent, often referred to as “First Nations” by more northerly Canadian definitions)
- Perth County: Perth, Scotland
- Bruce County: Name is of Scottish origin
- Grey County: Name is (chiefly) of English origin
- Dufferin County: Name is of multiple British origins
- Simcoe County: Name is of English origin
- Haliburton County: Name is of Scottish origin
- Peterborough County: Peterborough, England
- Hastings County: Hastings, England
- Lennox and Addington County: English politicians
- Frontenac County: Former figure of New France
- Renfrew County: Renfrewshire, Scotland
- Lanark County: Lanarkshire, Scotland
- United Counties of Leeds and Grenville: Leeds, England, and Grenville is an English name
- United Counties of Stormont, Dundas, and Glengarry: All names are Scottish
- United Counties of Prescott and Russell: Both are English names though the namesake Russell was Anglo-Irish
