Data / Population / Hillingdon

Population in Hillingdon

Population in Hillingdon was 326,671 in 2025, according to the Office for National Statistics (United Kingdom). That is down 0.4% from 2024.

2025, persons326,671
Change on 2024-0.4%
Series high327,8862024
Series low275,4992011

Population in Hillingdon, 2011 to 2025

260K280K300K320K340K201120142017202020252011: 275,499 persons2012: 281,263 persons2013: 285,982 persons2014: 290,225 persons2015: 294,011 persons2016: 297,451 persons2017: 299,469 persons2018: 302,263 persons2019: 305,641 persons2020: 306,460 persons2021: 305,107 persons2022: 312,493 persons2023: 322,383 persons2024: 327,886 persons2025: 326,671 persons
persons. Source: Office for National Statistics, Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved 2026-10-11, published 2026-07-29.
All 15 values
Periodpersons
2025326,671
2024327,886
2023322,383
2022312,493
2021305,107
2020306,460
2019305,641
2018302,263
2017299,469
2016297,451
2015294,011
2014290,225
2013285,982
2012281,263
2011275,499

Compared with London

Place2025
Hillingdon326,671
London9,122,909

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

Office for National Statistics. Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Contains public sector information licensed under the Open Government Licence v3.0. https://www.nomisweb.co.uk/api/v01/dataset/NM_2002_1.data.json?geography=TYPE480,TYPE424&gender=0&c_age=200&measures=20100&time=2011,latest. Retrieved 2026-10-11.

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Questions

What is the population in Hillingdon?

Population in Hillingdon was 326,671 in 2025, according to the Office for National Statistics (United Kingdom). That is down 0.4% from 2024.

Where does this figure come from?

Office for National Statistics (United Kingdom). Population estimates, local authority based by single year of age: all ages, both sexes, mid-year (ONS, Nomis NM_2002_1). Retrieved by Invokely on 2026-10-11.

What was the highest population in Hillingdon?

327,886 in 2024, the highest value since 2011 in this series.

Population elsewhere in London

Related statistics for Hillingdon

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