Frodsham is a market town, civil parish and electoral ward in the unitary authority of Cheshire West and Chester and the ceremonial county of Cheshire, England. Its population is 8,982. increasing to 9,077 at the 2011 Census. It is approximately south of Runcorn, 16 miles (26 km) south of Liverpool, and southwest of Manchester. The River Weaver runs to its northeast and on the west it overlooks the estuary of the River Mersey. The A56 road and the Chester–Manchester railway line pass through the town, and the M56 motorway passes to the northwest.