Population in Gwynedd

Population in Gwynedd was 120,295 in 2025, according to the Office for National Statistics (United Kingdom). That is down 0.3% from 2024.

2025, persons120,295
Change on 2024-0.3%
Series high121,5232011
Series low117,0722021

Population in Gwynedd, 2011 to 2025

117K118K119K120K121K122K201120142017202020252011: 121,523 persons2012: 121,439 persons2013: 120,403 persons2014: 119,796 persons2015: 119,632 persons2016: 118,958 persons2017: 118,881 persons2018: 118,129 persons2019: 117,584 persons2020: 118,180 persons2021: 117,072 persons2022: 118,157 persons2023: 120,307 persons2024: 120,713 persons2025: 120,295 persons
persons. Source: Office for National Statistics, Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved 2026-10-11, published 2026-07-29.
All 15 values
Periodpersons
2025120,295
2024120,713
2023120,307
2022118,157
2021117,072
2020118,180
2019117,584
2018118,129
2017118,881
2016118,958
2015119,632
2014119,796
2013120,403
2012121,439
2011121,523

Compared with Wales

Place2025
Gwynedd120,295
Wales3,175,181

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

Office for National Statistics. Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Contains public sector information licensed under the Open Government Licence v3.0. https://www.nomisweb.co.uk/api/v01/dataset/NM_2002_1.data.json?geography=TYPE480,TYPE424&gender=0&c_age=200&measures=20100&time=2011,latest. Retrieved 2026-10-11.

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Questions

What is the population in Gwynedd?

Population in Gwynedd was 120,295 in 2025, according to the Office for National Statistics (United Kingdom). That is down 0.3% from 2024.

Where does this figure come from?

Office for National Statistics (United Kingdom). Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved by Invokely on 2026-10-11.

What was the highest population in Gwynedd?

121,523 in 2011, the highest value since 2011 in this series.

Population elsewhere in Wales

Related statistics for Gwynedd

All statistics for Gwynedd