Scarborough is a district of Toronto, Ontario, Canada. It is situated atop the Scarborough Bluffs in the eastern part of the city. Its borders are …Scarborough is a district of Toronto, Ontario, Canada. It is situated atop the Scarborough Bluffs in the eastern part of the city. Its borders are Victoria Park Avenue to the west, Steeles Avenue and the city of Markham to the north, Rouge River and the city of Pickering to the east, and Lake Ontario to the south. Scarborough was named after the English town of Scarborough, North Yorkshire, inspired by its cliffs.