Hertfordshire is a county of South England, bordering on Greater London in the South: mainly low lying, with the Chiltern Hills in the northwest; largely agricultural; expanding light industries especially in the new towns.

Population: 1,033,977 (2001 est.) Area: 1634 sq km (631 sq miles) Administrative Centre: Hertford

Main data source: Collins English Dictionary (3rd Ed Updated -1994) (c)Harper Collins

Population figure: Hertfordshire County Council.