Data / Population / Harrow

Population in Harrow

Population in Harrow was 272,612 in 2025, according to the Office for National Statistics (United Kingdom). That is up 0.6% from 2024.

2025, persons272,612
Change on 2024+0.6%
Series high272,6122025
Series low240,4992011

Population in Harrow, 2011 to 2025

240K250K260K270K280K201120142017202020252011: 240,499 persons2012: 243,800 persons2013: 247,018 persons2014: 251,618 persons2015: 255,308 persons2016: 257,317 persons2017: 257,881 persons2018: 259,861 persons2019: 262,065 persons2020: 262,281 persons2021: 261,159 persons2022: 263,123 persons2023: 267,893 persons2024: 270,987 persons2025: 272,612 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
2025272,612
2024270,987
2023267,893
2022263,123
2021261,159
2020262,281
2019262,065
2018259,861
2017257,881
2016257,317
2015255,308
2014251,618
2013247,018
2012243,800
2011240,499

Compared with London

Place2025
Harrow272,612
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 Harrow?

Population in Harrow was 272,612 in 2025, according to the Office for National Statistics (United Kingdom). That is up 0.6% 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 Harrow?

272,612 in 2025, the highest value since 2011 in this series.

Population elsewhere in London

Related statistics for Harrow

All statistics for Harrow