Warwick (/ˈwɒrɪk/ WORR-ik) is the county town of Warwickshire, England. The town lies upon the River Avon, 11 miles (18 km) south of Coventry and just west of Leamington Spa and Whitnash with which it is conjoined. As of the 2001 United Kingdom census, it had a population of 23,350, increasing a decade later to 30,114.There has been human activity at Warwick as early as the Neolithic, and constant habitation since the 6th century. A Saxon burh was created at Warwick in the 9th century and Warwick Castle was established on the site in 1068 as part of the Norman conquest of England. Warwick School claims to be the oldest boys' school in the country.