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The population stood at 167,450 in 2025. That is 0.4% higher than a year earlier. That is the highest value in the published series, which begins in 1991.

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 — Slough

167,450, latest 2025 (+0.4% year on year, from 166,739).

The population stood at 167,450 in 2025. That is 0.4% higher than a year earlier. That is the highest value in the published series, which begins in 1991. Its low point was 105,377 in 1991; the latest reading is 59% above that.

Show the numbers (35 periods)
Population estimate — Slough, every published period
PeriodValue
2025167,450
2024166,739
2023163,608
2022159,765
2021158,448
2020158,281
2019157,632
2018155,915
2017154,573
2016152,565
2015150,104
2014147,313
2013144,880
2012143,095
2011140,713
2010137,800
2009134,742
2008131,453
2007127,991
2006125,200
2005122,874
2004120,833
2003120,869
2002120,927
2001120,577
2000119,694
1999118,497
1998117,980
1997116,499
1996114,882
1995112,921
1994110,986
1993108,779
1992106,920
1991105,377

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 — Slough
167,450 for Slough, 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/slough/population-estimate

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