The constituency is semi-rural and includes picturesque villages and farmland. The rivers Rib, Beane, Mimram, and Lea all meet in the county town of Hertford (2011 population 25,000), which is protected from over-development by a Green Belt encircling the town and separating it from Ware (18,000) in the western part of the constituency. Farms continue between Ware and the market town of Bishop's Stortford (40,000), in the northeast corner of the seat.
Hertford and Stortford constituency is generally regarded as an affluent seat,[citation needed] and includes a significant proportion of professional and managerial workers.[citation needed]Central London is within commuting distance by train of all the towns in the constituency. The pharmaceutical industry is a major employer in the seat and surrounding areas: both Ware and Harlow are the sites of GlaxoSmithKline facilities (while Gilston hosted Merck & Co. between 1982 and 2006). Since the early 1990s, Stansted, just beyond the eastern perimeter of the constituency, has also been responsible for bringing jobs and an improved train service to it.
Many commuters live in Bishop's Stortford, which has rail links to London's Liverpool Street station and is also close to Stansted Airport. Since the 1980s, the population of Thorley—now a southern suburb of Stortford—has become increasingly composed of owner-occupied houses in dormitory estates.
1983–1997: The District of East Hertfordshire wards of Bishop's Stortford Central, Bishop's Stortford Chantry, Bishop's Stortford Parsonage, Bishop's Stortford Thorley, Braughing, Buntingford, Hertford Bengeo, Hertford Castle, Hertford Kingsmead, Hertford Sele, Hunsdon, Little Hadham, Much Hadham, Sawbridgeworth, Standon St Mary, Stapleford, Tewin, Thundridge, Ware Christchurch, Ware Priory, Ware St Mary's, and Ware Trinity.[4]
1997–2010: The District of East Hertfordshire wards of Bishop's Stortford Central, Bishop's Stortford Chantry, Bishop's Stortford Parsonage, Bishop's Stortford Thorley, Great Amwell, Hertford Bengeo, Hertford Castle, Hertford Kingsmead, Hertford Sele, Hunsdon, Little Amwell, Much Hadham, Sawbridgeworth, Stanstead, Ware Christchurch, Ware Priory, Ware St Mary's, and Ware Trinity.[5]
2010–2024: The District of East Hertfordshire wards of Bishop's Stortford All Saints, Bishop's Stortford Central, Bishop's Stortford Meads, Bishop's Stortford Silverleys, Bishop's Stortford South, Great Amwell, Hertford Bengeo, Hertford Castle, Hertford Heath, Hertford Kingsmead, Hertford Sele, Hunsdon, Much Hadham, Sawbridgeworth, Stanstead Abbots, Ware Chadwell, Ware Christchurch, Ware St Mary's, and Ware Trinity.[6]
Marginal changes due to revision of local authority wards.
2024–present: The District of East Hertfordshire wards of Bishop's Stortford All Saints, Bishop's Stortford Central, Bishop's Stortford North, Bishop's Stortford Parsonage, Bishop's Stortford South, Bishop's Stortford Thorley Manor, Hertford Bengeo, Hertford Castle, Hertford Kingsmead, Hertford Sele, Hunsdon, Much Hadham, Sawbridgeworth, Ware Priory, Ware Rural (part), Ware St Mary's, and Ware Trinity.
Reduced to meet the electorate size requirements, with the transfer of the three small wards of Great Amwell, Hertford Heath and Stanstead Abbots (as they existed on 1 December 2020) to Broxbourne.[7]