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Overview

South West · Unitary authority

Wiltshire

2026/27 view

Wiltshire · ONS E06000054

Financial position as at 2026/27 Q1 quarter end

View sources
PEOPLE AND PLACE

Population and community profile

Latest official statistics
Population 523,700 2024
South West region 5,889,695
Wiltshire represents 8.89% of the region's population
Five-year population change
+20,715 residents ↑ 4.1%
2019: 502,985 residents2020: 507,047 residents2021: 513,240 residents2022: 516,185 residents2023: 519,779 residents2024: 523,700 residents
Wiltshire +4.1%
South West +4.4%
England +4.3%
Growth context

Wiltshire's population grew over five years. Its change was broadly in line with the South West and broadly in line with 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

6.0 µg/m³

PM2.5 · 2,024

Human-related sources 5.5 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

45.8%
11.0 6.0
2011: 11.01 µg/m³ 2012: 10.06 µg/m³ 2013: 10.62 µg/m³ 2014: 10.12 µg/m³ 2015: 8.63 µg/m³ 2016: 9.63 µg/m³ 2017: 8.84 µg/m³ 2018: 8.90 µg/m³ 2019: 7.85 µg/m³ 2020: 7.14 µg/m³ 2021: 7.02 µg/m³ 2022: 7.24 µg/m³ 2023: 5.96 µg/m³ 2024: 5.97 µg/m³
2011 2024
Since 2011 ↓ 45.8%
5 years ↓ 23.9%
10 years ↓ 41.0%
CURRENT MONITORING

Latest station measurement

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

Particulate air pollution

4.5% 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