Safety, air quality and noise in Loudoun County, Virginia

Safety — higher is safer

Loudoun County, Virginia scores 87 out of 100 for safety, where higher is safer.

Measured figure: 21.7 violent offences per 10,000 residents.

Safety uses a median of 21.7 violent offences per 10,000 residents across this area's Census tracts, each tract carrying the FBI-reported rate of its nearest reporting agency (2 agencies in all), from FBI Uniform Crime Reporting, latest published year, where each agency's rate is jurisdiction-wide, not a neighbourhood figure.

Median across the 85 member areas; middle half 87 to 94.

Clean air — higher is cleaner

Loudoun County, Virginia scores 57 out of 100 for clean air, where higher is cleaner.

Measured figure: 12.4 micrograms per cubic metre PM2.5 annual mean.

Clean air uses a median of 12.4 micrograms per cubic metre of PM2.5 across the 85 Tracts in this city, an annual mean modelled at 85 member-area centroids from the Copernicus CAMS regional background surface. This figure is approximate: a regional background estimate rather than a local modelled surface.

This score is approximate.

Median across the 85 member areas; middle half 57 to 57.

Quiet — higher is quieter

Loudoun County, Virginia scores 71 out of 100 for quiet, where higher is quieter.

Measured figure: 51.8 decibels (modelled).

Quiet uses a median of 51.8 decibels of modelled outdoor sound across the 85 Tracts in this city, a day-evening-night level taken at 85 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 85 member areas; middle half 54 to 100.