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The population stood at 120,295 in 2025. That is 0.3% lower than a year earlier.

Why the caveats matter

Every figure carries the publisher's own caveats. Where a statistic is published for a wider area than the one you clicked, or where the publisher itself flags it as unreliable, the page says so rather than quietly rounding it off.

The UK's four nations publish separately, so some figures stop at a border: house sale prices cover England and Wales, road collisions Great Britain. Pupil absence is published for England, but not every English district individually — some are reported only as part of their wider county. An area with fewer datasets isn't missing data — either its nation publishes that statistic through a different body, or (pupil absence only) its own district isn't reported separately.

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Population estimate — Gwynedd

120,295, latest 2025 (-0.3% year on year, from 120,713).

The population stood at 120,295 in 2025. That is 0.3% lower than a year earlier. The series peaked at 121,523 in 2011; the latest figure is 1.0% below that peak. Its low point was 115,007 in 1991; the latest reading is 5% above that.

Show the numbers (35 periods)
Population estimate — Gwynedd, every published period
PeriodValue
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
2010121,155
2009120,344
2008119,746
2007119,398
2006119,070
2005118,641
2004118,721
2003118,022
2002117,344
2001116,844
2000116,699
1999116,362
1998117,384
1997117,606
1996117,486
1995117,526
1994116,330
1993115,717
1992115,426
1991115,007

What these terms mean

Mid-year estimate
A modelled count of the population on 30 June, updated between censuses. It is an estimate, not a headcount. Source
Local authority district
The council area a statistic is published for -- 361 across the UK. In England these are boroughs, districts and unitary authorities; in Scotland, council areas; in Wales, principal areas; in Northern Ireland, districts.

Before you use these figures

  • Mid-year estimate, not a census count: This is a modelled mid-year (30 June) estimate, not a direct headcount. It is rebased periodically against the latest UK census results -- the current series was rebased to the 2021/2022 censuses, replacing previously published estimates for 2011 to 2022. Figures for the same year can therefore change between publications as later data becomes available.
  • Unrounded, but not precise to the individual: Figures are published unrounded to enable further calculation, but ONS is explicit that small estimates should not be read as accurate to a specific person -- they are produced using statistical models and disclosure-control methods, not a direct count.

Cite this figure:

Population estimate — Gwynedd
120,295 for Gwynedd, 2025
Caveats: Mid-year estimate, not a census count; Unrounded, but not precise to the individual
StatsMapped last confirmed this figure unchanged on 5 Sep 2026.
Source: Office for National Statistics, Population Estimates (via Nomis)
https://statsmapped.com/united-kingdom/local-authority/gwynedd/population-estimate

See every dataset published for Gwynedd

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