Lymm is a village and civil parish in the Borough of Warrington, Cheshire, England. It incorporates the hamlets of Booths Hill, Broomedge, Church Green, Deansgreen, Heatley, Heatley Heath, Little Heatley, Oughtrington, Reddish, Rushgreen and Statham. At the 2021 United Kingdom census it had a population of 12,660. The village is situated in the northern aspect of Cheshire and borders Greater Manchester to the East and lies 1 mile from the border of Salford to the north.