The county has major education and tourist industries and is noted for the concentration of performance motorsport companies and facilities. Oxford University Press is the largest firm among a concentration of print and publishing firms; the University of Oxford is also linked to the concentration of local biotechnology companies.
The main centre of population is the city of Oxford. Other significant settlements are Banbury, Bicester, Kidlington and Chipping Norton to the north of Oxford; Carterton and Witney to the west; Thame and Chinnor to the east; and Abingdon, Wantage, Didcot, Wallingford and Henley-on-Thames to the south. Although within the boundaries of Oxfordshire County Council, the areas to the south of the Thames, forming the Vale of White Horse and parts of South Oxfordshire, are located within the historic county of Berkshire.
The highest point is White Horse Hill, in the Vale of White Horse (historically in Berkshire), reaching 261 metres (856 ft).
Oxfordshire was recorded as a county in the early years of the 10th century and is situated on land between the River Thames to the south, the Cotswolds to the west, the Chilterns to the east and the Midlands to the north, with spurs running south to Henley-on-Thames and north to Banbury.