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Overview

North West · Metropolitan district

Knowsley

2026/27 view

Knowsley · ONS E08000011

Financial position as at 2026/27 Q1 quarter end

View sources
PEOPLE AND PLACE

Population and community profile

Latest official statistics
Population 162,565 2024
North West region 7,737,414
Knowsley represents 2.10% of the region's population
Five-year population change
+10,772 residents ↑ 7.1%
2019: 151,793 residents2020: 153,408 residents2021: 154,978 residents2022: 157,227 residents2023: 159,672 residents2024: 162,565 residents
Knowsley +7.1%
North West +5.1%
England +4.3%
Growth context

Knowsley's population grew over five years. Its change was 2.0 percentage points above the North West and 2.8 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

6.8 µg/m³

PM2.5 · 2,024

Human-related sources 6.3 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

39.7%
11.3 6.8
2011: 11.30 µg/m³ 2012: 10.54 µg/m³ 2013: 10.59 µg/m³ 2014: 10.31 µg/m³ 2015: 8.72 µg/m³ 2016: 9.49 µg/m³ 2017: 8.46 µg/m³ 2018: 8.95 µg/m³ 2019: 9.16 µg/m³ 2020: 7.56 µg/m³ 2021: 8.05 µg/m³ 2022: 8.76 µg/m³ 2023: 6.92 µg/m³ 2024: 6.81 µg/m³
2011 2024
Since 2011 ↓ 39.7%
5 years ↓ 25.6%
10 years ↓ 33.9%
CURRENT MONITORING

Latest station measurement

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

Particulate air pollution

5.1% 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