Greater Manchester is a metropolitan and ceremonial county in North West England. It borders Lancashire to the north, West Yorkshire and Derbyshire to the east, Cheshire to the south, and Merseyside to the west. Its largest settlement is the city of Manchester.
The county has an area of 1,276 km (493 sq mi) and is highly urbanised, with a population of 3,009,664 in 2024. Manchester is located in the centre of the county, with the city of Salford immediately adjacent to the west. Other large settlements include Rochdale in the north-east, Stockport in the south-east, Sale in the south-west, Wigan in the far north-west, and Bolton in the north-west. The majority of the county's settlements are part of the Greater Manchester Built-up Area, which extends into Cheshire and Merseyside and is the second most populous urban area in the United Kingdom. For local government purposes the county comprises ten metropolitan boroughs: Manchester, Salford, Bolton, Bury, Oldham, Rochdale, Stockport, Tameside, Trafford and Wigan. The borough councils collaborate through the Greater Manchester Combined Authority. The county was created on 1 April 1974 from parts of north-east Cheshire, south-east Lancashire, and a small part of the West Riding of Yorkshire.