South Yorkshire is a metropolitan county in the Yorkshire and the Humber region of England. It has a population of 1.29 million. It consists of four metropolitan boroughs: Barnsley, Doncaster, Rotherham, and City of Sheffield. South Yorkshire was created on 1 April 1974 as a result of the Local Government Act 1972.
Lying on the east side of the Pennines, South Yorkshire is landlocked, and borders Derbyshire (to the south-west), West Yorkshire (to the northwest), North Yorkshire (to the north), the East Riding of Yorkshire (to the northeast), Lincolnshire (to the east) and Nottinghamshire (to the southeast). The Sheffield Urban Area is the ninth most populous conurbation in the UK, and dominates the western half of South Yorkshire with over half of the county's population living within it.