UK public data, by local authority district
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The population stood at 110,242 in 2025. That is 0.2% 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 — Hertsmere

110,242, latest 2025 (+0.2% year on year, from 109,993).

The population stood at 110,242 in 2025. That is 0.2% higher than a year earlier. That is the highest value in the published series, which begins in 1991. Its low point was 90,048 in 1991; the latest reading is 22% above that.

Show the numbers (35 periods)
Population estimate — Hertsmere, every published period
PeriodValue
2025110,242
2024109,993
2023109,558
2022108,522
2021108,129
2020107,612
2019107,234
2018106,458
2017105,920
2016105,372
2015104,414
2014103,541
2013102,201
2012101,389
2011100,379
201099,402
200998,637
200897,642
200796,252
200695,225
200594,302
200493,788
200394,419
200294,295
200194,466
200094,078
199993,576
199893,223
199792,140
199691,893
199592,483
199492,402
199391,377
199290,652
199190,048

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 — Hertsmere
110,242 for Hertsmere, 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/hertsmere/population-estimate

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