Hayes is a town in west London. Historically situated within the county of Middlesex, it is now part of the London Borough of Hillingdon. The to…Hayes is a town in west London. Historically situated within the county of Middlesex, it is now part of the London Borough of Hillingdon. The town's population, including its localities Hayes End, Harlington and Yeading, was recorded in the 2021 census as 93,928. It is situated 13 miles west of Charing Cross, or 6.5 miles east of Slough. Hayes is served by the Great Western Main Line, and Hayes & Harlington railway station is on the Elizabeth line. The Grand Union Canal flows through the town centre.