Welwyn Hatfield in the context of "Hertsmere"

Hatfield is a town and civil parish in Hertfordshire, England, in the borough of Welwyn Hatfield. It had a population of 29,616 in 2001, 39,201 at the 2011 census, and 41,265 at the 2021 census. The settlement is of Saxon origin. Hatfield House, home of the Marquess of Salisbury, forms the nucleus of the old town. From the 1930s when de Havilland opened a factory, until the 1990s when British Aerospace closed it, aircraft design and manufacture employed more people there than any other industry. Hatfield was one of the post-war New Towns built around London and has much modernist architecture from the period. The University of Hertfordshire is based there.

Hatfield lies 20 miles (30 kilometres) north of London beside the A1(M) motorway and has direct trains to London King's Cross railway station, London St Pancras railway station, Finsbury Park and Moorgate. There has been a strong increase in commuters who work in London moving into the area.

The London Borough of Enfield (pronunciation) is a London borough in Greater London, England. The main communities in the borough are Edmonton, Enfield, Southgate and Palmers Green. Enfield is an Outer London borough and forms part of North London, being the northernmost borough and bordering Hertfordshire to the north and Essex to the northeast. The local authority is Enfield London Borough Council, based at Enfield Civic Centre. The borough's population is estimated to be 333,794.

It borders the London boroughs of Barnet to the west, Haringey to the south, and Waltham Forest to the southeast. To the north are the districts of Hertsmere, Welwyn Hatfield and Broxbourne (in Hertfordshire), and to the east is Epping Forest District in Essex.

Welwyn Garden City (/ˈwɛlɪn/ WEL-in) is a town in the Welwyn Hatfield district, in Hertfordshire, England, 20 miles (32 km) north of London. It was the second garden city in England (founded 1920) and one of the first new towns (designated 1948). It is unique in being both a garden city and a new town and exemplifies the physical, social and cultural planning ideals of the periods in which it was built. In 2021 it had a population of 51,505.

North Hertfordshire is one of ten local government districts in the county of Hertfordshire, England. Its council is based in Letchworth Garden City and the largest town is Hitchin. The district also includes the towns of Baldock and Royston and numerous villages and surrounding rural areas. Part of the district lies within the Chiltern Hills, a designated Area of Outstanding Natural Beauty.

The neighbouring districts are East Hertfordshire, Stevenage, Welwyn Hatfield, St Albans, Luton, Central Bedfordshire, South Cambridgeshire and Uttlesford.