# Merthyr Tydfil and Aberdare

South Wales. About 100,531 people (mid-2024 estimate) in 245 square kilometres.

Gerald Jones has been the Labour MP for Merthyr Tydfil and Aberdare since July 2024. They won by 7,447 votes on a 47.3% turnout.

Constituency. Code W07000099. In: [Wales](https://openindex.co.uk/wales)

## MP and the 2024 result

Gerald Jones has been the Labour MP for Merthyr Tydfil and Aberdare since July 2024.
They won by 7,447 votes on a 47.3% turnout.

MP: [Gerald Jones](https://members.parliament.uk/member/4501) (Labour).

### General election, 4 July 2024: Merthyr Tydfil and Aberdare

| Candidate | Party | Votes | Share |
| --- | --- | --- | --- |
| Gerald Jones (elected) | Labour | 15,791 | 44.8% |
| Gareth Thomas | Reform UK | 8,344 | 23.7% |
| Francis Whitefoot | Plaid Cymru | 4,768 | 13.5% |
| Amanda Jenner | Conservative | 2,687 | 7.6% |
| Jade Smith | Liberal Democrat | 1,276 | 3.6% |
| Peter Griffin | Green Party | 1,231 | 3.5% |
| Anthony Cole | Workers Party of Britain | 531 | 1.5% |
| Lorezo De Gregori | Independent | 375 | 1.1% |
| Bob Davenport | Communist Party of Britain | 212 | 0.6% |

Electorate 74,460. Turnout 47.3%. Majority 7,447 (21.1%). 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/3616

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: 21.1%** (July 2024). The winner in Merthyr Tydfil and Aberdare had a majority of 21.1% of valid votes at the general election on 4 July 2024 (House of Commons Library). Joint 195th largest majority of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/merthyr-tydfil-and-aberdare#f-ge2024-majority
- **Turnout, 2024 general election: 47.3%** (July 2024). Turnout in Merthyr Tydfil and Aberdare at the general election on 4 July 2024 was 47.3% (House of Commons Library). 27th lowest turnout of 650. Source: UK Parliament election results, July 2024. Published 4 July 2024. https://openindex.co.uk/constituency/merthyr-tydfil-and-aberdare#f-ge2024-turnout
- **Population: 99,671** (2021). Merthyr Tydfil and Aberdare had 99,671 usual residents at the census (ONS Census 2021). 288th 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/merthyr-tydfil-and-aberdare#f-population
- **People in radon Affected Area squares: 51%** (2022). About 51% of people in Merthyr Tydfil and Aberdare 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/merthyr-tydfil-and-aberdare#f-radon-affected-share

## On the map

- [Radon Affected Area by constituency](https://openindex.co.uk/map/radon-affected-areas?place=W07000099) (Worked out by Open Index · 2022): About 51% of people in Merthyr Tydfil and Aberdare 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=W07000099) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Rhondda Cynon Taf, where most of this constituency lies. The outline is Merthyr Tydfil and Aberdare.
- [Crime and ASB by council](https://openindex.co.uk/map/recorded-crime?place=W07000099) (Police recorded crime and outcomes (data.police.uk) · August 2026): Published for whole councils, so the map colours all of Rhondda Cynon Taf, where most of this constituency lies. The outline is Merthyr Tydfil and Aberdare.
- [Population by constituency](https://openindex.co.uk/map/population?place=W07000099) (Census 2021, England and Wales): Merthyr Tydfil and Aberdare had 99,671 usual residents at the census.

## How Merthyr Tydfil and Aberdare compares

Each constituency against every other constituency the measure covers.

| Measure | Merthyr Tydfil and Aberdare | Rank | Compared with |
| --- | --- | --- | --- |
| Majority, 2024 general election | 21.1% | joint 195th largest majority | 650 constituencies, UK · Jul 2024 |
| Turnout, 2024 general election | 47.3% | 27th lowest turnout | 650 constituencies, UK · Jul 2024 |
| Population | 99,671 | 288th least populated | 650 constituencies, UK · 2021 |
| People in radon Affected Area squares | 51% | joint 283rd most people in radon Affected Areas | 650 constituencies, UK · 2022 |

## What is the population of Merthyr Tydfil and Aberdare?

Merthyr Tydfil and Aberdare had 99,671 usual residents at the census.
Merthyr Tydfil and Aberdare is the 288th least populated of 650 in the UK.

## Figures for the whole of Rhondda Cynon Taf

Most of Merthyr Tydfil and Aberdare lies in Rhondda Cynon Taf. These figures are published for the whole of Rhondda Cynon Taf, not for constituencies, so they describe the council and not Merthyr Tydfil and Aberdare itself. [See Rhondda Cynon Taf](https://openindex.co.uk/rhondda-cynon-taf)

- **Average house price: £165,213** (August 2026). Rhondda Cynon Taf’s average house price was £165,213 in August 2026 (HM Land Registry). Up 4.9% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Median full-time pay: £34,837** (2025). Full-time workers living in Rhondda Cynon Taf earned a median of £34,837 in 2025 (ONS earnings survey). 56th lowest paid of 348. Source: Annual Survey of Hours and Earnings, 2025. Published 23 October 2025.
- **House price to pay: 4.7×** (2025). A home in Rhondda Cynon Taf costs 4.7 times local full-time pay. Joint 33rd most affordable of 348. Source: Worked out by Open Index from the UK House Price Index and the ONS earnings survey. Published 21 October 2026.
- **Population estimate: 241,015** (2025). Rhondda Cynon Taf’s population was an estimated 241,015 in mid-2025 (ONS population estimates). Down 0.3% in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026.

## Merthyr Tydfil and Aberdare in brief

The winner in Merthyr Tydfil and Aberdare had a majority of 21.1% of valid votes at the general election on 4 July 2024.
Turnout in Merthyr Tydfil and Aberdare at the general election on 4 July 2024 was 47.3%.
Merthyr Tydfil and Aberdare had 99,671 usual residents at the census.
About 51% of people in Merthyr Tydfil and Aberdare live in a 1 km square that the radon atlas marks as a radon Affected Area.

## About

- Type: Constituency
- Code: W07000099
- Council: [Rhondda Cynon Taf †](https://openindex.co.uk/rhondda-cynon-taf)
- Nation: [Wales](https://openindex.co.uk/wales)
- Area: 245 km²
- People, mid-2024: 100,531*
- Wards: 17
- Middle areas: 12
- Neighbourhoods: 61
- Output areas: 329

* 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

[Brecon, Radnor and Cwm Tawe](https://openindex.co.uk/constituency/brecon-radnor-and-cwm-tawe), [Pontypridd](https://openindex.co.uk/constituency/pontypridd), [Blaenau Gwent and Rhymney](https://openindex.co.uk/constituency/blaenau-gwent-and-rhymney), [Rhondda and Ogmore](https://openindex.co.uk/constituency/rhondda-and-ogmore), [Caerphilly](https://openindex.co.uk/constituency/caerphilly), [Neath and Swansea East](https://openindex.co.uk/constituency/neath-and-swansea-east)

## Similar places

Constituencies with the closest mix of age and density. [Neath and Swansea East](https://openindex.co.uk/constituency/neath-and-swansea-east), [Rhondda and Ogmore](https://openindex.co.uk/constituency/rhondda-and-ogmore), [Wrexham](https://openindex.co.uk/constituency/wrexham), [Aberafan Maesteg](https://openindex.co.uk/constituency/aberafan-maesteg), [Alyn and Deeside](https://openindex.co.uk/constituency/alyn-and-deeside), [Blaenau Gwent and Rhymney](https://openindex.co.uk/constituency/blaenau-gwent-and-rhymney).

## Latest updates for Merthyr Tydfil and Aberdare

- 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/W07000099

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/constituency/merthyr-tydfil-and-aberdare, or to one figure with its anchor, https://openindex.co.uk/constituency/merthyr-tydfil-and-aberdare#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 2026.10.9. The HTML page: https://openindex.co.uk/constituency/merthyr-tydfil-and-aberdare