Humberside was a non-metropolitan county of England from April 1, 1974 until April 1, 1996. It was composed of two halves either side of the Humber estuary, created using part of the East and West Ridings of Yorkshire and Lincolnshire, Parts of Lindsey. The county council's headquarters were County Hall at Beverley, inherited from the East Riding, and its largest settlement and only city Kingston upon Hull.
It bordered North Yorkshire to the north and west, South Yorkshire and Nottinghamshire to the south-west, and Lincolnshire to the south. It faced east towards the North Sea.
In local government terms it was abolished on April 1, 1996, with four unitary authorities being formed: North Lincolnshire, North East Lincolnshire, Kingston upon Hull and East Riding of Yorkshire. The name has continued in use as a geographic term and in names of institutions such as Humberside Police.