California Clearance Percentages for Major Crimes by County (2007)

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County
Murder
Rape
Robbery
Assault
Burglary
Larceny
Vehicle Theft
All
Alameda 25% 31% 18% 45% 8% 11% 5% 18%
Alpine 0%(a) 100% nr 32% 7% 8% nr 16%
Amador nr 43% 42% 66% 25% 22% 13% 38%
Butte 67% 27% 30% 56% 13% 20% 5% 27%
Calaveras nr 11% 40% 64% 15% 14% 6% 35%
Colusa 0%(a) 75% 43% 82% 22% 22% 9% 41%
Contra Costa 40% 36% 19% 46% 10% 13% 4% 17%
Del Norte 0%(a) 77% 71% 59% 19% 23% 8% 36%
El Dorado 150% 28% 27% 67% 20% 18% 7% 35%
Fresno 68% 51% 32% 71% 12% 15% 12% 30%
Glenn 50% 17% 13% 57% 11% 10% 23% 25%
Humboldt 33% 37% 30% 69% 14% 15% 9% 29%
Imperial 75% 21% 31% 50% 10% 10% 4% 16%
Inyo nr 100% 100% 86% 39% 60% 26% 66%
Kern 48% 40% 23% 39% 10% 11% 15% 18%
Kings 114% 52% 36% 68% 10% 21% 8% 32%
Lake 80% 53% 41% 70% 16% 22% 13% 38%
Lassen nr 77% 50% 80% 29% 21% 13% 45%
Los Angeles 49% 60% 28% 61% 14% 16% 9% 27%
Madera 40% 6% 3% 14% 5% 2% 1% 7%
Marin 100% 26% 31% 61% 16% 13% 4% 25%
Mariposa nr 83% 100% 79% 19% 15% 12% 34%
Mendocino 100% 41% 50% 59% 22% 21% 18% 38%
Merced 71% 53% 24% 61% 17% 22% 12% 30%
Modoc 100% 0%(a) nr 66% 8% 15% 36% 34%
Mono nr 14% 60% 20% 6% 8% 27% 12%
Monterey 34% 37% 21% 53% 9% 14% 8% 22%
Napa 67% 31% 49% 56% 21% 12% 11% 29%
Nevada 50% 25% 25% 54% 16% 17% 15% 28%
Orange 81% 46% 29% 65% 14% 18% 13% 28%
Placer 75% 41% 49% 56% 10% 19% 8% 25%
Plumas 100% 36% 50% 56% 27% 9% 12% 31%
Riverside 53% 28% 25% 50% 14% 12% 8% 20%
Sacramento 67% 32% 22% 51% 9% 14% 8% 20%
San Benito 40% 60% 34% 66% 15% 15% 10% 31%
San Bernardino 55% 49% 29% 59% 15% 21% 8% 28%
San Diego 64% 43% 33% 63% 14% 15% 3% 25%
San Francisco 48% 26% 16% 33% 10% 10% 3% 14%
San Joaquin 56% 35% 22% 55% 11% 12% 9% 22%
San Luis Obispo 60% 39% 30% 66% 15% 14% 14% 31%
San Mateo 15% 39% 35% 64% 19% 17% 14% 29%
Santa Barbara 60% 32% 27% 58% 19% 10% 14% 26%
Santa Clara 70% 32% 27% 48% 9% 16% 17% 23%
Santa Cruz 50% 21% 27% 54% 8% 14% 5% 22%
Shasta 45% 21% 36% 60% 18% 19% 13% 34%
Sierra nr nr nr 43% 0%(c) 3% 14% 17%
Siskiyou 100% 40% 25% 86% 22% 28% 55% 49%
Solano 61% 53% 30% 61% 18% 19% 9% 28%
Sonoma 112% 45% 50% 83% 16% 21% 10% 39%
Stanislaus 67% 55% 27% 53% 8% 16% 7% 21%
Sutter 150% 27% 34% 58% 9% 20% 9% 28%
Tehama 0%(a) 35% 59% 67% 17% 12% 5% 33%
Trinity 50% nr 40% 88% 22% 43% 4% 46%
Tulare 71% 38% 33% 49% 11% 10% 4% 19%
Tuolumne 100% 7% 80% 47% 16% 12% 4% 22%
Ventura 65% 24% 26% 61% 10% 16% 16% 26%
Yolo 25% 41% 34% 60% 16% 10% 43% 24%
Yuba nr 0%(c) 19% 25% 7% 5% 5% 11%

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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