The city of Cambridge is a university town and the administrative centre of the county of Cambridgeshire, England. It lies in East Anglia, on the River Cam, about 50 miles (80 km) north of London. According to the United Kingdom Census 2001, its population was 108,863 (including 22,153 students), and was estimated to be 125,717 in mid-2010.There is archaeological evidence of settlement in the area in bronze age and Roman times, and under Viking rule Cambridge became an important trading centre. The first town charters were granted in the 12th century, although city status was not conferred until 1951. Cambridge is most widely known as the home of the University of Cambridge, founded in 1209 and consistently ranked one of the top five universities in the world.