Doncaster is a minster town in South Yorkshire, England. Together with its surrounding suburbs and settlements, the town forms part of the Metropolitan Borough of Doncaster, which had a mid-2018 est. population of 310,542. The town itself has a population of 109,805 The Doncaster Urban Area had a population of 158,141 in 2011 and includes Doncaster and neighbouring small villages. Part of the West Riding of Yorkshire until 1974, Doncaster is about 17 miles (30 km) north-east of Sheffield, with which it is served by an international airport, Doncaster Sheffield Airport in Finningley. Under the Local Government Act 1972, Doncaster was incorporated into a newly created metropolitan borough in 1974, itself incorporated with other nearby boroughs in the 1974 creation of the metropolitan county of South Yorkshire.