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Ynys Môn

Constituency

North west Wales. About 69,097 people in 715 square kilometres.

MP for Ynys Môn

Llinos MediPlaid CymruMP since

They won by 637 votes on a 61.4% 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 63% of people in Ynys Môn live in a 1 km square that the radon atlas marks as a radon Affected Area.

Majority, 2024 general election
2.0%
Joint 46th smallest majority of 650
House of Commons Library · Jul 2024
Turnout, 2024 general election
61.4%
Joint 278th highest turnout of 650
House of Commons Library · Jul 2024
Population
68,863
3rd least populated of 650
ONS Census 2021 · 2021
People in radon Affected Area squares
63%
UK 44%
Worked out by Open Index

2024 general election result

Candidates in Ynys Môn at the general election on 4 July 2024, in finishing order
CandidatePartyVotesShare
Llinos MediElectedPlaid Cymru10,59032.5%
Virginia CrosbieConservative9,95330.5%
Ieuan WilliamsLabour7,61923.4%
Emmett JennerReform UK3,2239.9%
Martin SchwallerGreen Party6041.9%
Leena FarhatLiberal Democrat4391.3%
Sir Grumpus L ShorticusOfficial Monster Raving Loony Party1560.5%
Sam WoodLibertarian Party440.1%
Electorate
53,141
Turnout
61.4%
Majority
637 (2.0%)
Valid votes
32,628
Rejected ballots
79

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 Ynys Môn compares

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

Ynys MônMiddle
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%. Ynys Môn is 2.0%.
2.0%joint 46th smallest 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%. Ynys Môn is 61.4%.
61.4%joint 278th highest turnout
Population650 constituencies, UK · 2021
Population: every constituency in UK650 areas from 26,159 to 151,876. The middle area is 100,988. Ynys Môn is 68,863.
68,8633rd least 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%. Ynys Môn is 63.0%.
63%joint 239th most people in radon Affected Areas

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

What is the population of Ynys Môn?

Ynys Môn had 68,863 usual residents at the census.

Ynys Môn is the 3rd least populated of 650 in the UK.

Figures for the whole of Isle of Anglesey

Most of Ynys Môn lies in Isle of Anglesey. These figures are published for the whole of Isle of Anglesey, not for constituencies, so they describe the council and not Ynys Môn itself. See Isle of Anglesey

Average house price
£231,943
Down 0.3% in a year
HM Land Registry · Jul 2026
Median full-time pay
£35,709
85th lowest paid of 348
ONS earnings survey · 2025
House price to pay
6.5×
Joint 128th most affordable of 348
Worked out by Open Index
Population estimate
68,607
Down 0.4% in a year
ONS population estimates · 2025
Ynys Môn in brief

The winner in Ynys Môn had a majority of 2.0% of valid votes at the general election on 4 July 2024.

Turnout in Ynys Môn at the general election on 4 July 2024 was 61.4%.

Ynys Môn had 68,863 usual residents at the census.

About 63% of people in Ynys Môn live in a 1 km square that the radon atlas marks as a radon Affected Area.