| Frontenac County | |
| Official Name: | County of Frontenac |
| Settlement Type: | County (upper-tier) |
| Mapsize: | 250px |
| Coordinates: | 44.6667°N -118°W |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name1: | Ontario |
| Subdivision Name2: | Eastern Ontario |
| Seat Type: | County seat |
| Seat: | Glenburnie |
| Parts Type: | Municipalities |
| Parts Style: | coll |
| P1: | Township of Central Frontenac |
| P2: | Township of Frontenac Islands |
| P3: | Township of North Frontenac |
| P4: | Township of South Frontenac |
| Government Type: | County |
| Leader Title: | Warden |
| Leader Name: | Ron Vandewal |
| Leader Title1: | Deputy Warden |
| Area Footnotes: | [1] |
| Area Blank1 Title: | Census division |
| Area Blank1 Km2: | 3725.82 |
| Area Note: | Land area excludes Kingston |
| Population As Of: | 2021 |
| Population Note: | Total excludes Kingston |
| Population Blank1 Title: | Census division |
| Population Blank1: | 161780 |
| Population Density Blank1 Km2: | 43.4 |
| Timezone: | EST |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
Frontenac County is a county and census division of the Canadian province of Ontario. It is located in the eastern portion of Southern Ontario. The city of Kingston is in the Frontenac census division, but is separated from the County of Frontenac.
The county of Frontenac, situated within the Mecklenburg District, was originally created as an electoral district for the Legislative Assembly of Upper Canada in 1792 and its original limits were described as being:
Mecklenburg was renamed as the "Midland District" in 1792.[2]
At the beginning of 1800, the County was reorganized as follows:[3]
Through the addition of newly surveyed townships, by 1845 the County covered the following territory:
In 1860, the newly surveyed townships of Miller and Canonto were transferred from Renfrew County[4]
In 1998, the County was reorganized, and it now consists of the townships of North Frontenac, Central Frontenac, South Frontenac and Frontenac Islands.[5] The City of Kingston absorbed Kingston and Pittsburgh Townships and exists now as a separated municipality.
The county council itself was abolished and replaced by a management unit with limited powers, known as the Frontenac Management Board.[6] The management unit became a county again in 2004.[7] [8]
As a census division in the 2021 Census of Population conducted by Statistics Canada, Frontenac County had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 3725.82km2, it had a population density of in 2021.[1]
Children attend schools part of the Limestone District School Board, based in the City of Kingston.