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 in 2021 was 9,300. It is 16 miles (26 km) south of Liverpool and 28 miles (45 km) 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.

Cheshire West and Chester is a local government district with borough status in Cheshire, England. It was established on 1 April 2009 as part of the 2009 local government changes, by virtue of an order under the Local Government and Public Involvement in Health Act 2007. It superseded the boroughs of Ellesmere Port and Neston, Vale Royal and the City of Chester; its council is a unitary authority, having also assumed the functions and responsibilities of the former Cheshire County Council within its area. The remainder of ceremonial Cheshire is composed of Cheshire East, Halton and Warrington. Cheshire West and Chester has three key urban areas: Chester, Ellesmere Port and Northwich/Winsford.