What Clearance Rates Tell You About Police Effectiveness

What a Clearance Rate Is

A clearance rate is the percentage of reported crimes that law enforcement considers solved. A crime is typically cleared when a suspect is arrested, charged, and turned over for prosecution. It can also be cleared exceptionally when an arrest cannot be made for reasons beyond the agency's control, such as the suspect dying or the victim refusing to cooperate.

Clearance rates are one of the most direct measures of police effectiveness available. A department that solves a high percentage of reported crimes is doing something right, whether that means skilled investigators, good community relationships, or effective use of technology.

National Clearance Rate Averages

Nationally, clearance rates vary enormously by crime type. Homicide has historically had the highest clearance rate among violent crimes, though it has been declining. Recent national data shows homicide clearance rates around 50 to 55 percent, meaning roughly half of all murders go unsolved. Aggravated assault has a clearance rate around 50 percent, while robbery clears at about 30 percent.

Property crimes are solved at much lower rates. Burglary clearance rates hover around 14 percent, and larceny-theft is similar. Motor vehicle theft clearance rates have been increasing slightly thanks to GPS tracking technology but remain around 12 percent. These low numbers reflect the sheer volume of property crime and the difficulty of identifying suspects without witnesses or physical evidence.

Why Clearance Rates Vary by City

Some cities solve crimes at significantly higher rates than others, and the reasons are not always about competence. Cities with lower crime volumes can devote more investigative resources per case. Cities with higher community trust see more cooperation from witnesses. Cities that have invested in technology like surveillance cameras, forensic labs, and data analytics tend to clear more cases.

Staffing levels matter too. A police department that is understaffed relative to its crime volume will have overworked investigators carrying too many cases. Case quality suffers, and clearance rates drop. This is a cycle: low clearance rates erode community trust, which reduces cooperation, which further lowers clearance rates.

What Low Clearance Rates Mean for Residents

Low clearance rates have real consequences. If property crimes are almost never solved, the deterrent effect of law enforcement diminishes. Residents lose confidence in the police and may stop reporting crimes, creating a downward spiral. In neighborhoods where violent crimes regularly go unsolved, witnesses are less likely to come forward, and cycles of retaliatory violence can take hold.

High clearance rates, on the other hand, signal a well-functioning justice system. They suggest that victims will see some form of accountability and that potential offenders know there is a real risk of being caught. This deters crime and reinforces the social contract.

How to Factor This Into Your Research

Clearance rates are not available on SafeCityPeek, but they are worth seeking out from local police department annual reports or the FBI's Crime Data Explorer. When evaluating a city, look at both the crime rate and the clearance rate. A city with a moderate crime rate and high clearance rates may be safer in practice than one with lower reported crime and very low clearance rates.

The combination of crime rate data from SafeCityPeek and clearance rate data from local sources gives you the most complete picture of how safe a city truly is and how well its institutions are functioning. Both pieces of the puzzle matter for making an informed decision about where to live.