Administrative (pop., 2001: 673,777), geographic, and historic county, northwestern England. The county seat is Chester. Cheshire borders Wales, fronts the Dee and Mersey estuaries to the northwest, and lies partly within Peak District National Park. Evidence of hill forts from the Bronze and Iron ages has been found, as well as ruins of structures from the Roman occupation. The county is largely rural, but, along with dairy farming, engineering and chemical and technology industries are important.