Not all crime data is created equal. The FBI Uniform Crime Reporting program relies on voluntary participation from thousands of local law enforcement agencies — and not all of them report consistently. Understanding data coverage is essential for interpreting crime rates accurately.
Of the 3,124 counties with coverage data, 0 have full agency reporting, 3,124 have partial coverage, and 0 have minimal or no reporting. Counties with better coverage tend to be more populous and have more robust law enforcement infrastructure.
Counties with the Best Crime Data Coverage
These counties have full crime data coverage and the most reporting agencies:
| Rank | County | State | Coverage | Agencies | Safety Score |
|---|
Counties with the Worst Crime Data Coverage
These counties have minimal or no crime data reporting. Their published crime rates may not reflect actual conditions:
| Rank | County | State | Coverage | Agencies | Safety Score |
|---|
Important
Counties with incomplete crime data coverage may appear safer or more dangerous than they actually are. Always check the coverage badge on county pages before drawing conclusions from crime statistics.
Why Coverage Matters
Crime data coverage affects every analysis on this site. Counties with partial coverage may only report homicides but not property crimes, making their total crime rate appear artificially low. Counties with no coverage receive estimated scores based on neighboring counties and demographic factors.
The safest interpretation is to compare counties with similar coverage levels. A county with full coverage and a crime rate of 500 per 100,000 is not directly comparable to a county with partial coverage and a rate of 300. The partially covered county's true rate could be much higher.
Methodology
Crime data coverage comes from the FBI Uniform Crime Reporting (UCR) program participation records (2022 data year). "Full" coverage means all law enforcement agencies in the county reported complete data. "Partial" means some agencies reported or data was incomplete. "Homicide-only" means only homicide data was available. "Unavailable" means no agencies reported data for the county.
Data sources: FBI Uniform Crime Reporting (UCR) program (2022), County Health Rankings (2024). All figures are estimates and may differ from other published analyses due to methodology differences.