Public Safety Index
A composite score measuring crime levels and safety conditions in a county — how it's calculated, its FBI data sources, and what it means for property values.
What Is the Public Safety Index?
The Public Safety Index is a composite score that measures crime levels and safety conditions in a county. It combines violent crime rates, property crime rates, and trend data to produce a single comparative score that helps residents and investors assess how safe a county is relative to state and national averages.
Key Metrics
- Violent Crime Rate: Crimes per 100,000 residents, including homicide, rape, robbery, and aggravated assault.
- Property Crime Rate: Crimes per 100,000 residents, including burglary, larceny, and motor vehicle theft.
- Crime Trend: Year-over-year change in total crime rate, indicating whether safety is improving or declining.
- Public Safety Score: A 0 to 100 composite index where higher scores indicate safer conditions.
Primary Data Sources
Public safety data is sourced from the FBI's Uniform Crime Reporting (UCR) Program and the National Incident-Based Reporting System (NIBRS), which collect crime data from local law enforcement agencies. Not all agencies report to the FBI, so coverage varies by county. The Bureau of Justice Statistics provides additional context on corrections and court data. CountyFlow uses the most recent FBI Crime in the United States report and flags counties with incomplete reporting coverage.
How to Use It
Home buyers compare public safety scores across counties to find safe neighborhoods. Investors use crime trends to identify improving areas where property values may rise as safety improves. Insurance companies factor crime rates into premiums. Business owners use safety data when siting new locations.
Methodology Notes
The Public Safety Index normalizes violent and property crime rates against the national median and weights them to produce a 0 to 100 score. Counties with populations under 10,000 or agencies that did not report data are flagged as having limited coverage. Crime rates are per 100,000 residents to allow comparison across counties of different sizes. CountyFlow uses the most recent full year of FBI data and notes the reporting year on each report.
Related Terms
Environmental Risk Score
A composite measure of a county's exposure to natural hazards and environmental quality — flood zones, wildfire risk, air quality, and severe weather.
County Real Estate Data
Housing market conditions at the county level — median home values, rent prices, inventory, price appreciation, and how to interpret them.