Sudbury, officially Greater Sudbury (French: Grand-Sudbury), is a city in Ontario, Canada. It is the largest city in Northern Ontario by population, with a population of 161,531 at the 2016 Canadian Census.^[3] By land area, it is the largest in Ontario and the fifth largest in Canada. It is administratively a Unitary authority, and thus not part of any district, county, or regional municipality. The City of Greater Sudbury is separate from but entirely surrounded by Sudbury District.