Birkenhead is a toon wi-in the Metropolitan Borough o Wirral in Merseyside, Inglan. Historically in Cheshire, it is on the Wirral Peninsula, alang the wast bank o the River Mersey, opposite the city o Liverpull. The Birkenhead Urban Airie definit as the contiguous biggit-up airie alan
ng the eritern side o the Wirrai had a total populatio of 325,264 in the 2011 Census. In the 2011 census, the iParliamentary constituency o Birkenheadihad a population o 88,818. The Birkenhead an Tranmere electoral ward, coverin smaaerce airie,ihad a population o 15,879.