Eastern Ontario

Eastern Ontario
Est de l'Ontario (French)
Secondary region
  Core area
  Extended area
CountryCanada Canada
ProvinceOntario Ontario
Area
 • Total34,356.45 km2 (13,265.09 sq mi)
 • Core28,014.95 km2 (10,816.63 sq mi)
 • Extended area6,341.50 km2 (2,448.46 sq mi)
Population
 (2021)
 • Total1,892,332
 • Density55/km2 (140/sq mi)
 • Core
1,720,882
 • Extended area
171,450
Time zoneUTC−5 (EST)
 • Summer (DST)UTC−4 (EDT)
Postal code prefixes
Area codes613/343

Eastern Ontario (census population 1,892,332 in 2021) (French: Est de l'Ontario) is a secondary region of Southern Ontario in the Canadian province of Ontario. It occupies a wedge-shaped area bounded by the Ottawa River and Quebec to the northeast and east, the St. Lawrence River and New York to the south, and Northern Ontario and Central Ontario to the west and northwest.