Safety, air quality and noise in South Norfolk

Safety — higher is safer

South Norfolk scores 100 out of 100 for safety, where higher is safer.

Measured figure: 404.7 offences per 10,000 residents.

Safety uses a median of 404.7 offences per 10,000 residents across the 35 LSOAs in this local authority area, from Home Office police-recorded crime published through data.police.uk, 2025.

Median across the 35 member areas; middle half 100 to 100.

Clean air — higher is cleaner

South Norfolk scores 79 out of 100 for clean air, where higher is cleaner.

Measured figure: 7.6 micrograms per cubic metre PM2.5 annual mean.

Clean air uses a median of 7.6 micrograms per cubic metre of PM2.5 across the 35 LSOAs in this local authority area, an annual mean modelled at 35 member-area centroids from SpotCheck's city air-quality model.

Median across the 35 member areas; middle half 76 to 81.

Quiet — higher is quieter

South Norfolk scores 63 out of 100 for quiet, where higher is quieter.

Measured figure: 54.9 decibels (modelled).

Quiet uses a median of 54.9 decibels of modelled outdoor sound across the 35 LSOAs in this local authority area, a day-evening-night level taken at 35 member-area centroids from the national major-road traffic noise model, where a lower reading means a quieter area. This figure is approximate: modelled from the major-road network rather than a local noise surface.

This score is approximate.

Median across the 35 member areas; middle half 50 to 69.