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Newport West and Islwyn

Constituency

South east Wales. About 103,100 people (mid-2024 estimate) in 146 square kilometres.

MP for Newport West and Islwyn

Ruth JonesLabourMP since

They won by 8,868 votes on a 55.4% turnout.

As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

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Radon Affected Area by constituency

Worked out by Open Index · 2022

Under 1%90% or more

About 84% of people in Newport West and Islwyn live in a 1 km square that the radon atlas marks as a radon Affected Area.

Majority, 2024 general election
21.1%
Joint 195th largest majority of 650
House of Commons Library · Jul 2024
Turnout, 2024 general election
55.4%
Joint 174th lowest turnout of 650
House of Commons Library · Jul 2024
Population
101,566
308th most populated of 650
ONS Census 2021 · 2021
People in radon Affected Area squares
84%
UK 44%
Worked out by Open Index

2024 general election result

Candidates in Newport West and Islwyn at the general election on 4 July 2024, in finishing order
CandidatePartyVotesShare
Ruth JonesElectedLabour17,40941.5%
Paul TaylorReform UK8,54120.4%
Nick JonesConservative6,71016.0%
Brandon HamPlaid Cymru3,5298.4%
Mike HamiltonLiberal Democrat2,0875.0%
Kerry VosperGreen Party2,0785.0%
George EtheridgeIndependent1,5973.8%
Electorate
75,785
Turnout
55.4%
Majority
8,868 (21.1%)
Valid votes
41,951
Rejected ballots
163

Polling day . Shares are of valid votes; turnout is valid votes as a share of the electorate. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: House of Commons Library, UK Parliament election results. The result from the House of Commons Library

How Newport West and Islwyn compares

Each dot is a constituency. The black line marks the middle one.

Newport West and IslwynMiddle
Majority, 2024 general election650 constituencies, UK · Jul 2024
Majority, 2024 general election: every constituency in UK650 areas from 0.0% to 60.6%. The middle area is 14.1%. Newport West and Islwyn is 21.1%.
21.1%joint 195th largest majority
Turnout, 2024 general election650 constituencies, UK · Jul 2024
Turnout, 2024 general election: every constituency in UK650 areas from 40.0% to 75.2%. The middle area is 60.0%. Newport West and Islwyn is 55.4%.
55.4%joint 174th lowest turnout
Population650 constituencies, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. Newport West and Islwyn is 101,566.
101,566308th most populated
People in radon Affected Area squares650 constituencies, UK · 2022
People in radon Affected Area squares: every constituency in UK650 areas from 0.0% to 100.0%. The middle area is 39.0%. Newport West and Islwyn is 84.0%.
84%joint 143rd most people in radon Affected Areas

Every constituency ranked: population and people in radon affected area squares.

What is the population of Newport West and Islwyn?

Newport West and Islwyn had 101,566 usual residents at the census.

Newport West and Islwyn is the 308th most populated of 650 in the UK.

Figures for the whole of Caerphilly

Most of Newport West and Islwyn lies in Caerphilly. These figures are published for the whole of Caerphilly, not for constituencies, so they describe the council and not Newport West and Islwyn itself. See Caerphilly

Average house price
£198,545
Up 4.4% in a year
HM Land Registry · Aug 2026
Median full-time pay
£35,367
78th lowest paid of 348
ONS earnings survey · 2025
House price to pay
5.6×
Joint 66th most affordable of 348
Worked out by Open Index
Population estimate
176,078
Down 0.1% in a year
ONS population estimates · 2025
Newport West and Islwyn in brief

The winner in Newport West and Islwyn had a majority of 21.1% of valid votes at the general election on 4 July 2024.

Turnout in Newport West and Islwyn at the general election on 4 July 2024 was 55.4%.

Newport West and Islwyn had 101,566 usual residents at the census.

About 84% of people in Newport West and Islwyn live in a 1 km square that the radon atlas marks as a radon Affected Area.