Massachusetts Clearance Percentages for Major Crimes by County (2006)

County Murder Rape Robbery Assault Burglary Larceny Vehicle
Theft
All
Barnstable
100% 42% 32% 54% 9% 12% 22% 26%
Berkshire
50% 31% 35% 44% 11% 12% 13% 24%
Bristol
59% 32% 26% 62% 12% 20% 9% 35%
Dukes
nr 100% nr 91% 27% 27% 50% 43%
Essex
40% 29% 22% 47% 8% 13% 9% 21%
Franklin
nr 30% 53% 61% 12% 13% 21% 30%
Hampden
45% 11% 18% 25% 8% 8% 5% 15%
Hampshire
nr 10% 32% 43% 12% 10% 11% 21%
Middlesex
73% 12% 17% 45% 7% 10% 14% 18%
Nantucket
nr 0%(a) nr 73% 26% 19% 29% 47%
Norfolk
17% 28% 29% 54% 13% 16% 15% 26%
Plymouth
18% 23% 24% 48% 11% 13% 8% 24%
Suffolk
47% 58% 23% 41% 10% 11% 6% 21%
Worcester
70% 21% 25% 49% 11% 13% 9% 26%

 

v

Notes:

a: 1 to 10 reported crimes

b: 11 to 20 reported crimes

c: 21 to 30 reported crimes

d: 31 to 40 reported crimes

nr: no crimes reported

The data set used for this presentation (see below) is consisent with but may differ in part from other data sets provided by the Uniform Crime Reporting Program and used for other presentations in this series.

Clearance Percentage: The percentage of known or reported crimes cleared by arrest. The percentage is determined by dividing the number of arrests for a specific offense by the number of offenses reported to police. Blank cells indicate that no offenses in this category were reported to police. A zero percentage (0%) indicates that none of the reported offenses were cleared by an arrest.

Reported Crimes: The number of known crimes reported to police. The number of these crimes cleared by arrest is represented by the Clearance Percentage, calculated by dividing the number of reported crimes by the number of crimes cleared by an arrest, and is provided in a separate table.

All: Refers to all of the seven major crimes in the table: murder, rape, robbery, assault, burglary, larceny, and vehicle thef (see below)t.

Description of Source Data: "The . . . dataset is a compilation of offenses reported to law enforcement agencies in the United States. Due to the vast number of categories of crime committed in the U.S., the FBI has limited the type of crimes included in this compilation to those crimes which people are most likely to report to police and those crimes which occur frequently enough to be analyzed across time. Crimes included are criminal homicide, forcible rape, robbery, aggravated assault, burglary, larceny-theft, and motor vehicle theft. Much information about these crimes is provided in this dataset. The number of times an offense has been reported, the number of reported offenses that have been cleared by arrests . . . [are] major items of information collected." Federal Bureau of Investigation, US Department of Justice.

Source: Uniform Crime Reporting Program Data - Offenses Known and Clearances by Arrest

More Information on Source Data

 
 
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