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The population stood at 162,316 in 2025. That is 0.7% 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 — Dacorum

162,316, latest 2025 (+0.7% year on year, from 161,139).

The population stood at 162,316 in 2025. That is 0.7% higher than a year earlier. That is the highest value in the published series, which begins in 1991. Its low point was 133,192 in 1991; the latest reading is 22% above that.

Show the numbers (35 periods)
Population estimate — Dacorum, every published period
PeriodValue
2025162,316
2024161,139
2023158,612
2022156,239
2021155,211
2020154,815
2019154,367
2018153,982
2017153,282
2016152,462
2015150,906
2014149,380
2013148,057
2012146,826
2011145,298
2010143,651
2009142,205
2008140,802
2007139,527
2006138,973
2005138,633
2004138,403
2003138,413
2002138,118
2001137,843
2000137,322
1999137,013
1998136,751
1997135,514
1996134,341
1995134,076
1994133,755
1993133,734
1992133,768
1991133,192

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 — Dacorum
162,316 for Dacorum, 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/dacorum/population-estimate

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