# South West Hertfordshire

The south west of the East of England. About 101,223 people (mid-2024 estimate) in 97 square kilometres.

Mr Gagan Mohindra has been the Conservative MP for South West Hertfordshire since July 2024. They won by 4,456 votes on a 67.3% turnout.

Constituency. Code E14001496. In: [East of England](https://openindex.co.uk/east-of-england)

## MP and the 2024 result

Mr Gagan Mohindra has been the Conservative MP for South West Hertfordshire since July 2024.
They won by 4,456 votes on a 67.3% turnout.

MP: [Mr Gagan Mohindra](https://members.parliament.uk/member/4804) (Conservative).

### General election, 4 July 2024: South West Hertfordshire

| Candidate | Party | Votes | Share |
| --- | --- | --- | --- |
| Gagan Mohindra (elected) | Conservative | 16,458 | 34.1% |
| Sally Symington | Liberal Democrat | 12,002 | 24.9% |
| Alex Sufit | Labour | 9,637 | 20.0% |
| Keith Steers | Reform UK | 6,790 | 14.1% |
| Narinder Sian | Green Party | 2,532 | 5.2% |
| Bernadette O'Malley | Party of Women | 295 | 0.6% |
| Victor Silkin | Rejoin EU | 232 | 0.5% |
| Michael McGetrick | Social Democratic Party | 158 | 0.3% |
| Ketankumar Pipaliya | UK Voice | 150 | 0.3% |

Electorate 71,737. Turnout 67.3%. Majority 4,456 (9.2%). Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. https://electionresults.parliament.uk/elections/3780

MP as of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Key figures

- **Majority, 2024 general election: 9.2%** (July 2024). The winner in South West Hertfordshire had a majority of 9.2% of valid votes at the general election on 4 July 2024 (House of Commons Library). Joint 198th smallest majority of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/south-west-hertfordshire#f-ge2024-majority
- **Turnout, 2024 general election: 67.3%** (July 2024). Turnout in South West Hertfordshire at the general election on 4 July 2024 was 67.3% (House of Commons Library). Joint 94th highest turnout of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/south-west-hertfordshire#f-ge2024-turnout
- **Population: 99,064** (2021). South West Hertfordshire had 99,064 usual residents at the census (ONS Census 2021). 264th least populated of 650. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/constituency/south-west-hertfordshire#f-population
- **People in radon Affected Area squares: 76%** (2022). About 76% of people in South West Hertfordshire live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/constituency/south-west-hertfordshire#f-radon-affected-share

## On the map

- [Radon Affected Area by constituency](https://openindex.co.uk/map/radon-affected-areas#place=E14001496) (Worked out by Open Index · 2022): About 76% of people in South West Hertfordshire live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Average house price by council](https://openindex.co.uk/map/house-prices#place=E14001496) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Three Rivers, where most of this constituency lies. The outline is South West Hertfordshire.
- [Crime and ASB by council](https://openindex.co.uk/map/recorded-crime#place=E14001496) (Police recorded crime and outcomes (data.police.uk) · August 2026): Published for whole councils, so the map colours all of Three Rivers, where most of this constituency lies. The outline is South West Hertfordshire.
- [Population by constituency](https://openindex.co.uk/map/population#place=E14001496) (Census 2021, England and Wales): South West Hertfordshire had 99,064 usual residents at the census.

## How South West Hertfordshire compares

Each constituency against every other constituency the measure covers.

| Measure | South West Hertfordshire | Rank | Compared with |
| --- | --- | --- | --- |
| Majority, 2024 general election | 9.2% | joint 198th smallest majority | 650 constituencies, UK · Jul 2024 |
| Turnout, 2024 general election | 67.3% | joint 94th highest turnout | 650 constituencies, UK · Jul 2024 |
| Population | 99,064 | 264th least populated | 650 constituencies, UK · 2021 |
| People in radon Affected Area squares | 76% | joint 179th most people in radon Affected Areas | 650 constituencies, UK · 2022 |

## What is the population of South West Hertfordshire?

South West Hertfordshire had 99,064 usual residents at the census.
South West Hertfordshire is the 264th least populated of 650 in the UK.

## Figures for the whole of Three Rivers

Most of South West Hertfordshire lies in Three Rivers. These figures are published for the whole of Three Rivers, not for constituencies, so they describe the council and not South West Hertfordshire itself. [See Three Rivers](https://openindex.co.uk/three-rivers)

- **Average house price: £590,232** (August 2026). Three Rivers’ average house price was £590,232 in August 2026 (HM Land Registry). Up 0.9% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £43,980** (2025). Full-time workers living in Three Rivers earned a median of £43,980 in 2025 (ONS earnings survey). 64th highest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 13.4×** (2025). A home in Three Rivers costs 13.4 times local full-time pay. 10th least affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Deprivation score: 10.0** (2025). Three Rivers has a deprivation score of 10.0 in the English Indices of Deprivation 2025 (MHCLG). Joint 23rd least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025.

## South West Hertfordshire in brief

The winner in South West Hertfordshire had a majority of 9.2% of valid votes at the general election on 4 July 2024.
Turnout in South West Hertfordshire at the general election on 4 July 2024 was 67.3%.
South West Hertfordshire had 99,064 usual residents at the census.
About 76% of people in South West Hertfordshire live in a 1 km square that the radon atlas marks as a radon Affected Area.

## About

- Type: Constituency
- Code: E14001496
- Council: [Three Rivers †](https://openindex.co.uk/three-rivers)
- Region: [East of England](https://openindex.co.uk/east-of-england)
- Nation: [England](https://openindex.co.uk/england)
- Area: 97.15 km²
- People, mid-2024: 101,223*
- Wards: 14
- Middle areas: 13
- Neighbourhoods: 58
- Output areas: 304

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the council this constituency mostly lies in. Its edges do not follow it.

## Next door

[Watford](https://openindex.co.uk/constituency/watford), [Hemel Hempstead](https://openindex.co.uk/constituency/hemel-hempstead), [Ruislip, Northwood and Pinner](https://openindex.co.uk/constituency/ruislip-northwood-and-pinner), [Chesham and Amersham](https://openindex.co.uk/constituency/chesham-and-amersham), [St Albans](https://openindex.co.uk/constituency/st-albans), [Hertsmere](https://openindex.co.uk/constituency/hertsmere)

## Similar places

Constituencies with the closest mix of age and density. [Doncaster Central](https://openindex.co.uk/constituency/doncaster-central), [Runnymede and Weybridge](https://openindex.co.uk/constituency/runnymede-and-weybridge), [Hyndburn](https://openindex.co.uk/constituency/hyndburn), [Mid Cheshire](https://openindex.co.uk/constituency/mid-cheshire), [Hertsmere](https://openindex.co.uk/constituency/hertsmere), [Stockton North](https://openindex.co.uk/constituency/stockton-north).

## Latest updates for South West Hertfordshire

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/E14001496

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/constituency/south-west-hertfordshire, or to one figure with its anchor, https://openindex.co.uk/constituency/south-west-hertfordshire#f-ge2024-majority.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.11. The HTML page: https://openindex.co.uk/constituency/south-west-hertfordshire