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The population stood at 25,770 in 2025. That is 0.6% 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 — Na h-Eileanan Siar

25,770, latest 2025 (-0.6% year on year, from 25,930).

The population stood at 25,770 in 2025. That is 0.6% lower than a year earlier. The series peaked at 29,330 in 1991; the latest figure is 12.1% below that peak. Its low point was 25,770 in 2025; the latest reading is 0% above that.

Show the numbers (35 periods)
Population estimate — Na h-Eileanan Siar, every published period
PeriodValue
202525,770
202425,930
202326,000
202226,120
202126,160
202026,080
201926,340
201826,500
201726,690
201626,700
201526,930
201427,180
201327,350
201227,540
201127,690
201027,600
200927,420
200827,280
200727,210
200627,060
200526,930
200426,650
200326,430
200226,350
200126,450
200026,790
199927,210
199827,540
199727,910
199628,600
199528,810
199429,120
199329,260
199229,240
199129,330

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 — Na h-Eileanan Siar
25,770 for Na h-Eileanan Siar, 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/na-h-eileanan-siar/population-estimate

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