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Overview

London · London borough

Merton

2026/27 view

Merton · ONS E09000024

Financial position as at 2026/27 Q1 quarter end

View sources
PEOPLE AND PLACE

Population and community profile

Latest official statistics
Population 218,539 2024
London region 9,089,736
Merton represents 2.40% of the region's population
Five-year population change
+1,320 residents ↑ 0.6%
2019: 217,219 residents2020: 217,101 residents2021: 215,426 residents2022: 215,105 residents2023: 217,135 residents2024: 218,539 residents
Merton +0.6%
London +2.2%
England +4.3%
Growth context

Merton's population grew over five years. Its change was 1.6 percentage points below the London and 3.6 percentage points below 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

8.6 µg/m³

PM2.5 · 2,024

Human-related sources 8.1 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

41.9%
14.8 8.0
2011: 14.82 µg/m³ 2012: 13.22 µg/m³ 2013: 13.47 µg/m³ 2014: 12.91 µg/m³ 2015: 10.46 µg/m³ 2016: 12.33 µg/m³ 2017: 12.00 µg/m³ 2018: 12.29 µg/m³ 2019: 11.68 µg/m³ 2020: 9.73 µg/m³ 2021: 8.46 µg/m³ 2022: 9.22 µg/m³ 2023: 7.98 µg/m³ 2024: 8.61 µg/m³
2011 2024
Since 2011 ↓ 41.9%
5 years ↓ 26.3%
10 years ↓ 33.3%
CURRENT MONITORING

Latest station measurement

UK-AIR
No active UK-AIR monitoring station is currently mapped to this council.
HEALTH IMPACT

Particulate air pollution

6.4% 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