UK public data, by local authority district
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The population stood at 218,891 in 2025. That is 0.5% 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 — Merton

218,891, latest 2025 (-0.5% year on year, from 220,020).

The population stood at 218,891 in 2025. That is 0.5% lower than a year earlier. The series peaked at 220,020 in 2024; the latest figure is 0.5% below that peak. Its low point was 170,924 in 1991; the latest reading is 28% above that.

Show the numbers (35 periods)
Population estimate — Merton, every published period
PeriodValue
2025218,891
2024220,020
2023218,697
2022216,028
2021215,426
2020217,101
2019217,219
2018216,171
2017215,431
2016215,514
2015213,791
2014211,025
2013208,529
2012205,166
2011200,543
2010199,136
2009198,136
2008195,859
2007194,260
2006192,520
2005190,583
2004188,908
2003189,298
2002190,561
2001191,106
2000188,196
1999185,062
1998182,355
1997181,675
1996180,623
1995177,695
1994175,754
1993173,711
1992171,672
1991170,924

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 — Merton
218,891 for Merton, 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/merton/population-estimate

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