Toronto is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021,it is the most populous city in Canada and the fourth most populous city in North America. The city is the anchor of the Golden Horseshoe, an urban agglomeration of 9,765,188 people surrounding the western end of Lake Ontario, while the Greater Toronto Area proper had a 2021 population of 6,712,341.

Markham is a city in the Regional Municipality of York, Ontario, Canada. It is approximately 30 km northeast of Downtown Toronto. In the 2021 Census, Markham had a population of 338,503, which ranked it the largest in York Region, fourth largest in the Greater Toronto Area, and 16th largest in Canada.

Pickering is a city located in Southern Ontario, Canada, immediately east of Toronto in Durham Region.Beginning in the 1770s, the area was settled by primarily ethnic British colonists. An increase in population occurred after the American Revolutionary War, when the Crown resettled Loyalists and encouraged new immigration.

Ajax is a town in Durham Region in Southern Ontario, Canada, located in the eastern part of the Greater Toronto Area.The town is named for HMS Ajax, a Royal Navy cruiser that served in the Second World War. It is approximately 11 kilometres east of Toronto on the shores of Lake Ontario and is bordered by the City of Pickering to the west and north, and the Town of Whitby to the east.

Whitby is a seaside town, port and civil parish in North Yorkshire, England. The town is on the Yorkshire Coast at the mouth of the River Esk. It has a maritime, mineral and tourist economy. The fishing port emerged during the Middle Ages, supporting important herring and whaling fleets, and was where Captain Cook learned seamanship and, coincidentally, where his vessel to explore the southern ocean, The Endeavour was built.

Oshawa is a city in Ontario, Canada, on the Lake Ontario shoreline. It lies in Southern Ontario, approximately 60 km east of Downtown Toronto. It is commonly viewed as the eastern anchor of the Greater Toronto Area and of the Golden Horseshoe.

Clarington is a lower-tier municipality in the Regional Municipality of Durham in Ontario, Canada. It was incorporated in 1973 as the town of Newcastle with the merging of the town of Bowmanville, the Village of Newcastle and the townships of Clarke and Darlington, and was established on January 1 1974. In 1993, the town was renamed Clarington, a portmanteau of the names of the two former townships. Darlington today is largely suburban, while Clarke remains largely rural. Bowmanville is the largest community in the municipality and is the home of the municipal offices.

Vaughan is a city in Ontario, Canada. It is located in the Regional Municipality of York, just north of Toronto. Vaughan was the fastest-growing municipality in Canada between 1996 and 2006 with its population increasing by 80.2% during this time period and having nearly doubled in population since 1991. It is the fifth-largest city in the Greater Toronto Area, and the 17th-largest city in Canada.

Brampton is a city in the Canadian province of Ontario. Brampton is a city in the Greater Toronto Area and is a lower-tier municipality within Peel Region. The city has a population of 656,480 as of the 2021 Census, making it the ninth most populous municipality in Canada and the third most populous city in the Greater Golden Horseshoe urban area, behind Toronto and Mississauga.

Mississauga, historically known as Toronto Township, is a city in the Canadian province of Ontario. It is situated on the shores of Lake Ontario in the Regional Municipality of Peel, adjoining the western border of Toronto. With a population of 717,961 as of 2021, Mississauga is the seventh-most populous municipality in Canada, third-most in Ontario, and second-most in the Greater Toronto Area after Toronto itself.

Oakville is a town in Halton Region, Ontario, Canada. It is located on Lake Ontario between Toronto and Hamilton. At its 2021 census population of 213,759, it is Ontario's largest town. Oakville is part of the Greater Toronto Area, one of the most densely populated areas of Canada.

Richmond Hill is a city in south-central York Region, Ontario, Canada. Part of the Greater Toronto Area, it is the York Region's third most populous municipality and the 27th most populous municipality in Canada. Richmond Hill is situated between the cities of Markham and Vaughan, north of Thornhill, and south of Aurora