Regional Municipality of Durham

Durham Region
Regional municipality (upper-tier)
Regional Municipality of Durham
Clockwise from top right: Oshawa, Ajax Waterfront Park, Nautical Village in Pickering, Uxbridge, Whitby Harbour, Darlington Provincial Park
Flag Seal
Motto:  "A Great Place to Grow"
Oshawa Pickering Whitby Ajax Clarington Scugog Uxbridge Brock Bowman- ville Newcastle Beaverton Port Perry
Map showing Durham Region's location in Ontario
Coordinates: 43°55′N 78°56′W
Country	Canada
Province	Ontario
Established	1974
Seat	Whitby
Government
• Chair Governing body	John Henry Durham Regional Council
Area
• Land	2,521.11 km2 (973.41 sq mi)
Elevation	91.3 m (300 ft)
Population  (2021)
• Total	696,692
• Density	276.5/km2 (716/sq mi)
Time zone	UTC−05:00 (EST)
• Summer (DST)	UTC−04:00 (EDT)
Website	www.durham.ca/en/index.aspx

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The Regional Municipality of Durham (/ˈdʊərəm/), informally referred to as Durham Region, is a regional municipality in Southern Ontario, Canada. Located east of Toronto and the Regional Municipality of York, it forms the east end of the Greater Toronto Area (GTA) and is part of the Golden Horseshoe region. It has an area of approximately 2,500 km² (970 sq mi). The regional government is headquartered in Whitby.

The southern portion of Durham Region, on Lake Ontario, is primarily suburban in nature, forming the eastern end of the "905 belt" of suburbs around Toronto, while the northern portion comprises rural areas and small towns. The city of Pickering, town of Ajax, and the township of Uxbridge are part of the Toronto Census Metropolitan Area, while the communities of Oshawa, Whitby, and Clarington comprise the Oshawa Census Metropolitan Area.