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.