United Counties of Stormont, Dundas and Glengarry

Stormont, Dundas and Glengarry
United Counties of Stormont, Dundas and Glengarry
Historic County Courthouse and offices in Cornwall
Location of Stormont Dundas and Glengarry United Counties
Coordinates: 45°10′N 74°57′W / 45.167°N 74.950°W / 45.167; -74.950
CountryCanada
ProvinceOntario
RegionEastern Ontario
Established1850
County seatCornwall
Municipalities
Government
  WardenTony Fraser
Area
  Land3,235.54 km2 (1,249.25 sq mi)
  Census div.3,308.85 km2 (1,277.55 sq mi)
 Land area excludes Cornwall and Akwesasne
Population
 (2021)
  Total
66,792
  Density20.6/km2 (53/sq mi)
  Census div.
114,637
  Census div. density34.6/km2 (90/sq mi)
 Total excludes Cornwall and Akwesasne
Time zoneUTC-5 (EST)
  Summer (DST)UTC-4 (EDT)
Websitewww.sdg.on.ca

The United Counties of Stormont, Dundas and Glengarry (SDG) is a county and census division in the Canadian province of Ontario, that comprises three historical counties. The county's administrative office is located within the City of Cornwall, which, together with the Mohawk Nation of Akwesasne, is geographically within the county but administered independently.

The United Counties of SDG borders Quebec to the east and New York in the United States to the south. The sovereign Mohawk Nation of Akwesasne straddles both borders, thus including territory partly within Ontario, Quebec and New York.