Wearside

Wearside () is a built-up area in County Durham and Tyne and Wear, England. It is named after the River Wear which flows through it and traditionally all in the County of Durham. In the 2011 census, its official name was the Sunderland Built-up area since Sunderland is its largest part, the urban area extends to the surrounding City of Sunderland district, small parts of County Durham district and a small part of the Metropolitan Borough of Gateshead. Notable towns in the urban area include Birtley, Chester le Street, Hetton le Hole, Houghton le Spring and Washington.