Southern California Crime Study

In the Southern California Crime Study (SCCS), the researchers made an effort to contact each police agency in the Southern California region and request address-level incident crime data for the years 2005-2012. Many of the agencies were willing to share their data with us. As a consequence, we have crime data for 2,740 of the 3,852 tracts in the region, which cover 219 of the 341 cities and 83.3 percent of the region’s population.

Further information

The data come from crime reports officially coded and reported by the police departments. We classified crime events into six Uniform Crime Report (UCR) categories: homicide, aggravated assault, robbery, burglary, motor vehicle theft, and larceny. Crime events were geocoded for each city separately to latitude–longitude point locations using ArcGIS 10.2, and subsequently aggregated to various units such as blocks, block groups, and census tracts. The average geocoding match rate was 97.2% across the cities, with the lowest value at 91.4%. These data have been used in several prior studies (click on publications link below).
In 2010:

  • Of 270,095 blocks, we have crime data for 208,091 (77.04%)
  • We have crime data covering population of 16,779,884 out of 20,149,002 total (83.28%)
  • 128,125 blocks have crime data in all years covering 11,122,770 population (55.2% of total population)
  • 150,341 blocks have crime data in all years but one, covering 12,442,179 population (61.75% of total population)

Publications Using SoCal Crime Study Data

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Public Outreach with SoCal Crime Study Data

Dr. Hipp presents recent work at the SoCal Social Analytics Workshop

A wealth of digital information is generated daily through social networks, e.g., Twitter. A number of domains, including public health, national security, public safety, and public policy, can benefit greatly from the awareness of trends and situations as they become observable in social media data. There are many active research projects from various disciplines related to social media analytics. The purpose of this one-day workshop is for SoCal researchers to present their work, exchange ideas, and explore collaboration opportunities in this increasingly important domain.

Dr. Kubrin quoted in Los Angeles Times story

Read the story “Opposition to ‘sanctuary state’ law gains ground, but is it a pointless political ploy?” here: