Hertfordshire is a county in southern England, bordered by Bedfordshire to the north, Cambridgeshire to the north-east, Essex to the east, Buckinghamshire to the west and Greater London to the south. For government statistical purposes, it is placed in the East of England region.
In 2013, the county had a population of 1,140,700 living in an area of 634 square miles (1,640 km2). Four towns have between 50,000 and 100,000 residents: Hemel Hempstead, Stevenage, Watford and St Albans. Hertford, once the main market town for the medieval agricultural county, derives its name from a hart (stag) and a ford, used as the components of the county's coat of arms and flag