Haydock is a village within the Metropolitan Borough of St Helens, in Merseyside, England. At the 2011 Census, it had a population of 11,416 Haydock's historic area covers the Haydock electoral ward and a section of the Blackbrook ward.

The Metropolitan Borough of St Helens is a local government district with borough status in Merseyside, North West England. The borough is named after its largest settlement, St Helens, but also includes neighbouring towns and villages such as Earlestown, Rainhill, Eccleston, Clock Face, Haydock, Billinge, Garswood, Rainford and Newton-le-Willows.