Council profile

Isle of Anglesey

Data through 26 October 2026

Welsh council · Wales · 35 seats in 14 wards · All seats elected every five years · Next election 6 May 2027

Plaid Cymru have a majority on Isle of Anglesey Council. The council has 35 councillors in 14 wards. Seats by party: Plaid Cymru 18, Other 12, Labour 3, Reform 1, Lib Dem 1. The next election is on 6 May 2027.

Seats by party

Plaid Cymru
35 seats - 18 for a majority
1
3
1
18
12
Reform 1Labour 3Lib Dem 1Plaid Cymru 18Other 12
Seat changes since the 5 May 2022 election Other +2 Reform +1 Plaid Cymru −3
Vote share at the 5 May 2022 election (35 seats, all wards)
ShareSeats won
Other44.1%10
Plaid Cymru29.4%21
Conservative12.0%0
Labour7.2%3
Lib Dem4.0%1
Green3.0%0
Reform0.3%0
Next election
6 May 2027
all 35 seats up, then every five years
Largest party
Plaid Cymru 18
majority of 1; 18 needed
Closest result
Plaid Cymru won the last seat by 12 votes over Independent, 5 May 2022
Latest by-election
Plaid Cymru hold, 30 July 2026 (4 since 2021)
Constituencies
2024Now
Voted Leave in 2016
51%
GB 52%

Who holds each ward

AethwyBodowyrBro AberffrawBro'r LlynnoeddCanolbarth MônCefniCrigyllLligwyParc a'r MynyddSeiriolTalybolionTref CybiTwrcelynYnys Gybi
Plaid CymruIndependent

Coloured by the party holding most of the ward's seats today; where seats are split evenly, by the party with the higher share at the last election.

Councillors and last results

Select a ward for its full results, candidates and last by-election.

Ward and councillorsLast election
Aethwy
Robin Williams, Dyfed Jones, Sonia Williams
5 May 2022
Plaid Cymru 51.1% lead 27.2 pts
Bodowyr
Alwen Pennant Watkin, Dafydd Roberts
5 May 2022
Plaid Cymru 25.0% lead 1.2 pts
Bro Aberffraw
John Ifan Jones, Arfon Wyn
5 May 2022
Plaid Cymru 33.4% lead 3.0 pts
Bro'r Llynnoedd
Gwilym Jones, Jon Taylor
5 May 2022
Independent 34.4% lead 6.6 pts
Canolbarth Môn
Non Dafydd, Paul Ellis, Dylan Rees
5 May 2022
Plaid Cymru 34.7% lead 5.9 pts
Cefni
Geraint Ap Ifan Bebb, Nicola Roberts
5 May 2022
Plaid Cymru 44.5% lead 20.6 pts
Crigyll
Neville Evans, Douglas Massie Fowlie
5 May 2022
Independent 32.0% lead 5.2 pts
Lligwy
Margaret Roberts, Ieuan Williams, Euryn Morris
5 May 2022
Independent 40.7% lead 7.3 pts
Parc a'r Mynydd
Robert Jones, Glyn Haynes
5 May 2022
Independent 34.7% lead 1.1 pts
Seiriol
Gary Pritchard, Alun Roberts, Carwyn Elias Jones
5 May 2022
Plaid Cymru 62.9% lead 43.6 pts
Talybolion
Kenneth Hughes, Llio Owen, Jackie Lewis
5 May 2022
Plaid Cymru 35.3% lead 14.7 pts
Tref Cybi
Jeff Evans, Pip O'Neill
5 May 2022
Independent 35.2% lead 3.9 pts
Twrcelyn
Derek Owen, Liz Wood, Aled Jones
5 May 2022
Independent 30.6% lead 0.4 pts
Ynys Gybi
Celfyn Furlong, Keith Roberts, Dafydd Rhys Thomas
5 May 2022
Plaid Cymru 25.7% lead 2.1 pts

Changed party since the election

1 councillor now sit for a different party from the one they were elected for.

WardCouncillorElected asNow
TalybolionLlio OwenPlaid Cymru 2022Independent

Every council by-election since 2021

4 by-elections since July 2021, 2 of them gains.

DateWardResultWinner's share
30 July 2026Bro'r LlynnoeddPlaid Cymru hold48.5%
5 February 2026Ynys GybiReform gain from Plaid Cymru43.9%
24 October 2024TalybolionIndependent gain from Plaid Cymru
30 March 2023AethwyPlaid Cymru hold54.0%

Parliamentary constituencies

ConstituencyShare of council2024 winnerProjected now
Ynys Môn100%Plaid Cymru 33%

Share of the council: the proportion of its census neighbourhoods (2021 LSOAs) in each seat. The projection is PollCheck's demographic model at current polling, not a forecast.

Who lives in Isle of Anglesey

68,874 residents in 30,821 households

Voted Leave in 2016
51% 1 below GB
Degree or higher
32% 2 below GB
No qualifications
18% same as GB
Own their home
68% 7 above GB
Rent from a council or housing association
16% 1 below GB
Rent privately
16% 4 below GB
Aged 15 to 34
23% 8 below GB
Aged 65 and over
32% 10 above GB

GB figure. 2021 Census (Scotland: 2022): age as a share of residents aged 15 and over, qualifications of residents aged 16 and over, housing as a share of households. Leave: 2016 EU referendum, Electoral Commission results by counting area.

Councils most like this one

Closest on the measures above: the 2016 Leave vote, age, qualifications and housing. Maps show which party holds each ward.

Sources and method

Seat totals and control: PollCheck council control tracker. Councillors: Open Council Data (CC BY-SA 4.0). Election results: Democracy Club (CC BY 4.0), with some vote counts from DCLEAPIL, Leman (2025) (CC BY-SA 4.0), and corrections checked against councils' official declarations. Ward boundaries: Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026. Census: Office for National Statistics and National Records of Scotland.

Councillor lists and DCLEAPIL-derived vote counts on this page are available under CC BY-SA 4.0.

In wards electing more than one councillor, a party's share counts only its leading candidate (the Rallings and Thrasher method). Independents count individually. The lead is the gap between the top two parties' shares.