Durham County, Ontario

Last updated
Durham County
Dissolved county
Coordinates: 43°55′N78°56′W / 43.917°N 78.933°W / 43.917; -78.933
Colony Upper Canada
District Newcastle District
Dissolved1850 (reorganized into the United Counties of Northumberland and Durham)
Time zone UTC-5 (Eastern (EST))
  Summer (DST) UTC-4 (Eastern (EDT))

Durham County (area 376,397 acres (1,523 km2)) is an historic county in Ontario, Canada. It was named for the English County Durham and city of Durham. It was created in 1792 but was later merged Northumberland County to form the United Counties of Northumberland and Durham. In 1974, the two counties were split and reorganized, with the former portions of Durham County reorganized into the Regional Municipality of Durham.



Durham County was created in 1792 by a proclamation of Lieutenant Governor Simcoe. The original boundaries were as follows:

That the thirteenth of the said counties be hereafter called by the name of the county of Durham ; which county is to be bounded on the east by the westernmost line of the county of Northumberland, on the south by lake Ontario until it meets the westernmost point of Long Beach, thence by a line running north sixteen degrees west until it intersects the southern boundary of a tract of land belonging to the Mississague Indians, thence along the said tract parallel to lake Ontario until it meets the northwesternmost boundary of the county of Northumberland. [1]

In 1798, the Parliament of Upper Canada passed a statute defining the boundaries of the counties. Durham was then defined to include:

That the townships of Hope, Clarke and Darlington, with all the tract of land hereafter to be laid out into townships, which lies to the southward of the small lakes above the Rice Lake, and the communication between them and between the eastern boundary of the township of Hope, and the western boundary of the township of Darlington, produced north, sixteen degrees west, until they intersect either of the said lakes, or the communication between them, shall constitute and form the County of Durham. [2]

In 1834, the townships of Verulam, Fenelon and Eldon were added to Durham County. [3]

Mergers and dissolution

Durham was united administratively with Northumberland County as the United Counties of Northumberland and Durham from 1850 until Durham County was dissolved on January 1, 1974.

Effective January 1, 1974, about half of Durham County was merged with Ontario County to create the Regional Municipality of Durham. The township of Manvers was transferred to Victoria County, which is now the city of Kawartha Lakes, Cavan was transferred to Peterborough County, where it is now part of Cavan-Monaghan, and Hope was transferred to Northumberland County, where it is now part of the town of Port Hope.

The townships of Darlington and Clarke were amalgamated with the Town of Bowmanville and the Village of Newcastle as the Town of Newcastle, and the township of Cartwright was combined with the Ontario County townships of Scugog and Reach to create a new Township of Scugog. In 1993, Newcastle was renamed Clarington.

Historic townships

The county was originally composed of the townships of Cartwright, Manvers, Cavan, Darlington, Clarke and Hope, and portions of what is now Peterborough County, created in 1838. [4]

See also

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  1. Proclamation, Lieutenant Governor Simcoe, July 16, 1792; reprinted Statutes of the Province of Upper Canada; Together with Such British Statutes, Ordinances of Quebec, and Proclamations, as Relate to the Said Province (Kingston: F. M. Hill., 1831) p. 24.
  2. An act for the better division of this province, SUC 1798, c. 5, s. 20. Reprinted in The Statutes of Upper Canada to the Time of Union, Revised and Published by Authority, Vol. I - Public Acts (Toronto: Robert Stanton, Queen's Printer, 1843).
  3. An Act to attach certain Townships in the District of Newcastle to the Counties of Northumberland and Durham, respectively, SUC 1834, c. 15.
  4. Jesse Edgar Middletwon and Fred Landon, Province of Ontario — A History 1615 to 1927 (Toronto: Dominion Publishing Company, 1927).
  5. "The First Settlers in Clarington - Canadian History in the Making", Clarington Promoter, Volume 7 Issue 3 November 2017.
  6. Sherrell Branton Leetooze, The Trail Through The Bush — A brief history of Manvers Township (Durham: L.M-J Associates, 1998).

Coordinates: 44°05′N78°36′W / 44.083°N 78.600°W / 44.083; -78.600