Merseyside is a metropolitan county in North West England, with a population of 1.38 million. It encompasses the metropolitan area centred on both banks of the lower reaches of the Mersey Estuary, and comprises five metropolitan boroughs: Knowsley, St Helens, Sefton, Wirral, and the city of Liverpool. Merseyside, which was created on 1 April 1974 as a result of the Local Government Act 1972, takes its name from the River Mersey.
Merseyside spans 249 square miles (645 km2) of land which border Lancashire (to the north-east), Greater Manchester (to the east), and Cheshire (to the south and south-west); the Irish Sea is to the west. North Wales is across the Dee Estuary. There is a mix of high density urban areas, suburbs, semi-rural and rural locations in Merseyside, but overwhelmingly the land use is urban.