Historic Counties Institute

Geography • Identity • Continuity

Reference, evidence, and public education for the historic counties.

Historic counties are the enduring geography. Councils are administration, lieutenancies are ceremonial – neither define the counties.

County Dossier

Hertfordshire

On the edge of metropolis: market town and manor country.

Hertfordshire is an inland county in southern England, combining rolling countryside with historic towns and modern developments.

Hertfordshire county reference map

At a glance

Hertfordshire at a glance

On the edge of metropolis: market town and manor country.

Nation England
Formal name County of Hertford
Foundation c. 1011
  • River crossing & market site
  • Earliest reference: Anglo-Saxon Chronicle
  • London’s hinterland
  • Area: 633 sq miles / 1,639 sq km
  • Population: 1,157,166
  • County Top: Pavis Wood (800ft / 244m)

County Geography

Hertfordshire lies between Bedfordshire and Cambridgeshire to the north and Middlesex and Essex to the south and east, with Buckinghamshire on the western side. The county is shaped by low rolling ground, the Lea system, and the Chiltern rise in the west.

The county’s coherence comes from its position as London’s northern county belt framed by river valleys and western upland edge.

Map Reference

View Hertfordshire on the map

Hertfordshire is the county. The map also shows lieutenancies and council areas that use the county name.

Open Hertfordshire in the Interactive Map

Places and routes

St Albans, Hertford, Watford, Stevenage, and Hitchin explain the county from Roman and market-town core to western approach and northern route corridor. Together they place Hertfordshire as a linked inland county, not simply an outer edge of London.

Connections

The Great North Road, the Lea corridor, and the westward approaches toward the Chilterns have long organised movement across Hertfordshire. Together, those routes define a coherent county frame.

Hertfordshire landscape or key location
Knebworth House and Gardens, Hertfordshire.

Names

  • Hertfordshire
  • County of Hertford

County of Hertford is the formal historical style. Herts remains the familiar short form, while the county name itself reflects the shire built around Hertford and the ford on the Hart.

By the 10th century Hertfordshire was established in the English shire framework, and Domesday records its hundreds as a settled county structure. The Lea side, London approaches, and Chiltern edge still form a clear historic county geography.

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County Reference

Explore Hertfordshire

Open the map to explore Hertfordshire, or return to the county index to browse other counties.