California Clearance Percentages for Major Crimes by County (2006)

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County Murder Rape Robbery Assault Burglary Larceny Vehicle
Theft
All
Alameda
34% 35% 17% 46% 7% 11% 5% 17%
Alpine
nr 0%(a) nr 32% 14% 8% 0%(a) 14%
Amador
100% 24% 40% 58% 18% 19% 12% 31%
Butte
82% 34% 35% 59% 9% 17% 7% 25%
Calaveras
100% 18% 33% 59% 13% 13% 7% 31%
Colusa
nr 50% 43% 80% 13% 12% 17% 34%
Contra Costa
51% 53% 19% 46% 10% 11% 7% 17%
Del Norte
nr 52% 23% 60% 28% 27% 9% 36%
El Dorado
150% 38% 53% 70% 23% 18% 7% 35%
Fresno
64% 58% 28% 74% 12% 15% 13% 30%
Glenn
0%(a) 43% 29% 74% 11% 10% 24% 30%
Humboldt
67% 38% 34% 58% 13% 18% 9% 26%
Imperial
33% 28% 23% 27% 7% 7% 5% 11%
Inyo
nr 67% 100% 86% 49% 54% 25% 62%
Kern
48% 31% 20% 30% 8% 11% 14% 15%
Kings
75% 71% 34% 67% 14% 19% 9% 32%
Lake
86% 69% 50% 85% 20% 27% 25% 50%
Lassen
100% 60% 0%(a) 69% 18% 23% 7% 39%
Los Angeles
47% 57% 25% 56% 14% 15% 8% 25%
Madera
50% 13% 3% 13% 5% 1% 2% 6%
Marin
33% 45% 24% 58% 13% 11% 4% 22%
Mariposa
100% 50% 100% 86% 19% 14% 4% 37%
Mendocino
50% 68% 59% 67% 37% 29% 39% 47%
Merced
50% 57% 28% 61% 13% 18% 13% 29%
Modoc
nr 50% 67% 63% 16% 15% 50% 36%
Mono
nr 13% 100% 16% 13% 7% 0%(b) 10%
Monterey
33% 34% 22% 53% 10% 15% 9% 24%
Napa
100% 36% 50% 77% 13% 12% 13% 37%
Nevada
150% 22% 33% 57% 13% 14% 18% 27%
Orange
71% 47% 29% 66% 15% 17% 13% 28%
Placer
100% 43% 32% 65% 16% 16% 8% 24%
Plumas
nr 0%(a) 0%(a) 37% 26% 10% 12% 22%
Riverside
49% 27% 23% 47% 11% 10% 7% 18%
Sacramento
54% 40% 21% 46% 8% 13% 8% 18%
San Benito
100% 63% 34% 70% 13% 16% 18% 32%
San Bernardino
64% 53% 25% 61% 16% 21% 10% 28%
San Diego
58% 41% 31% 65% 15% 14% 4% 25%
San Francisco
50% 28% 16% 34% 9% 11% 4% 14%
San Joaquin
61% 39% 26% 53% 11% 12% 10% 22%
San Luis Obispo
83% 28% 33% 75% 15% 12% 23% 33%
San Mateo
38% 30% 24% 58% 11% 16% 9% 24%
Santa Barbara
77% 40% 24% 60% 18% 14% 18% 29%
Santa Clara
58% 24% 25% 49% 7% 16% 27% 24%
Santa Cruz
63% 15% 22% 52% 7% 12% 5% 19%
Shasta
100% 23% 32% 59% 11% 19% 12% 30%
Sierra
nr 0%(a) 0%(a) 65% 20% 14% 0%(b) 26%
Siskiyou
nr 29% 33% 89% 20% 28% 59% 48%
Solano
79% 36% 31% 64% 14% 18% 11% 28%
Sonoma
45% 42% 41% 85% 14% 16% 9% 37%
Stanislaus
59% 44% 31% 49% 9% 15% 9% 20%
Sutter
50% 23% 28% 52% 11% 18% 5% 25%
Tehama
80% 57% 65% 66% 15% 12% 12% 33%
Trinity
nr 0%(a) 0%(a) 88% 32% 33% 12% 43%
Tulare
47% 45% 35% 48% 10% 8% 7% 18%
Tuolumne
nr 20% 33% 54% 14% 9% 3% 21%
Ventura
38% 29% 26% 61% 13% 16% 20% 27%
Yolo
0%(a) 34% 30% 66% 10% 9% 60% 28%
Yuba
0%(a) 3% 14% 23% 4% 3% 3% 9%

 

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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 categoriesof crime committed in the U.S., the FBI has limited the type of crimes includedin this compilationto those crimes which people are most likely to report to police and those crimeswhich occur frequentlyenough to be analyzed across time. Crimes included are criminal homicide, forcible rape, robbery, aggravated assault, burglary, larceny-theft, and motor vehicle theft. Much informationabout these crimes is provided in this dataset. The number oftimes an offense has been reported, the number of reported offenses that havebeen cleared byarrests . . . [are] major items of information collected.” Federal Bureau of Investigation, US Departmentof Justice.

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

More Information on Source Data