Aurora is a town in central York Region in the Greater Toronto Area, within the Golden Horseshoe of Southern Ontario, Canada. It is located north of the City of Richmond Hill and is partially situated on the Oak Ridges Moraine. In the Canada 2021 Census, the municipal population of Aurora was the 92nd largest in Canada, compared to 95th for the 2016 Census and 97th for the 2006 Census. Aurora is twinned with Leksand, Sweden.

The Regional Municipality of York, also called York Region, is a regional municipality in Southern Ontario, Canada, between Lake Simcoe and Toronto. The region was established after the passing of then Bill 102, An Act to Establish The Regional Municipality of York, in 1970. It replaced the former York County in 1971, and is part of the Greater Toronto Area and the inner ring of the Golden Horseshoe. The regional government is headquartered in Newmarket.