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Overview

London · London borough

Hillingdon

2026/27 view

Hillingdon · ONS E09000017

Financial position as at 2026/27 Q1 quarter end

View sources
PEOPLE AND PLACE

Population and community profile

Latest official statistics
Population 329,185 2024
London region 9,089,736
Hillingdon represents 3.62% of the region's population
Five-year population change
+23,544 residents ↑ 7.7%
2019: 305,641 residents2020: 306,460 residents2021: 305,107 residents2022: 312,162 residents2023: 321,977 residents2024: 329,185 residents
Hillingdon +7.7%
London +2.2%
England +4.3%
Growth context

Hillingdon's population grew over five years. Its change was 5.5 percentage points above the London and 3.5 percentage points above England.

2019–2024 ONS mid-year estimates
Population estimates and labour-market measures from ONS/Nomis.Official profile
AIR QUALITY

How clean is the air?

Long-term particulate pollution across the council area, alongside measurements from local UK-AIR monitoring stations.

Defra 2,024
POPULATION-WEIGHTED ANNUAL MEAN

Fine particulate matter

8.2 µg/m³

PM2.5 · 2,024

Human-related sources 7.6 µg/m³
Other sources 0.5 µg/m³
Modelled population-weighted annual concentration across the local authority area. This is not a live sensor reading.
LONG-TERM TREND

PM2.5 over time

45.1%
14.9 7.8
2011: 14.88 µg/m³ 2012: 13.17 µg/m³ 2013: 13.33 µg/m³ 2014: 12.81 µg/m³ 2015: 9.95 µg/m³ 2016: 11.16 µg/m³ 2017: 11.41 µg/m³ 2018: 11.38 µg/m³ 2019: 11.26 µg/m³ 2020: 8.62 µg/m³ 2021: 8.31 µg/m³ 2022: 9.32 µg/m³ 2023: 7.80 µg/m³ 2024: 8.18 µg/m³
2011 2024
Since 2011 ↓ 45.1%
5 years ↓ 27.3%
10 years ↓ 36.1%
CURRENT MONITORING

Latest station measurement

UK-AIR
PM2.5 4.5 µg/m³
Provisional
Last 24 hours 3.2 – 17.8 µg/m³
2026-09-22 02:00:00+01: 8.6 µg/m³ 2026-09-22 03:00:00+01: 7.8 µg/m³ 2026-09-22 04:00:00+01: 7.8 µg/m³ 2026-09-22 05:00:00+01: 8.5 µg/m³ 2026-09-22 06:00:00+01: 8.5 µg/m³ 2026-09-22 07:00:00+01: 8.5 µg/m³ 2026-09-22 08:00:00+01: 17.8 µg/m³ 2026-09-22 09:00:00+01: 10.9 µg/m³ 2026-09-22 10:00:00+01: 8.8 µg/m³ 2026-09-22 11:00:00+01: 10.8 µg/m³ 2026-09-22 12:00:00+01: 5.7 µg/m³ 2026-09-22 13:00:00+01: 3.4 µg/m³ 2026-09-22 14:00:00+01: 4.2 µg/m³ 2026-09-22 15:00:00+01: 4.2 µg/m³ 2026-09-22 16:00:00+01: 4.2 µg/m³ 2026-09-22 17:00:00+01: 3.9 µg/m³ 2026-09-22 18:00:00+01: 3.6 µg/m³ 2026-09-22 19:00:00+01: 3.2 µg/m³ 2026-09-22 20:00:00+01: 4.1 µg/m³ 2026-09-22 21:00:00+01: 5.1 µg/m³ 2026-09-22 22:00:00+01: 4.5 µg/m³
London Harlington Automatic Urban and Rural Monitoring Network (AURN) · Urban Industrial Latest measurement: 2026-09-22 22:00:00+01

This is a measurement from an individual monitoring station and should not be interpreted as the current concentration across the whole council area.

HEALTH IMPACT

Particulate air pollution

6.1% of mortality attributable to particulate air pollution
2024 Not compared

This OHID measure estimates the mortality burden associated with particulate air pollution. It is a health-impact measure, not a pollution concentration.

Annual PM2.5 is Defra Pollution Climate Mapping data. Monitoring readings are station-specific UK-AIR measurements and may be provisional. Defra source