Eastern Ontario

Eastern Ontario Est de l'Ontario (French)
Secondary region
Core area   Extended area
Country	Canada
Province	Ontario
Area
• Total	34,356.45 km2 (13,265.09 sq mi)
• Core	28,014.95 km2 (10,816.63 sq mi)
• Extended area	6,341.50 km2 (2,448.46 sq mi)
Population  (2021)
• Total	1,892,332
• Density	55/km2 (140/sq mi)
• Core	1,720,882
• Extended area	171,450
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Postal code prefixes	K
Area codes	613/343

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.