While efforts are increasingly aimed at understanding and identifying “hot spots” of ordinary crime, little is known about the geographic concentration of terrorist attacks. What areas are most prone to terrorism? Does the geographic concentration of attacks change over time? Do specific ideologies motivate and concentrate terrorist attacks? Moreover, what factors increase the risk that an attack will occur in a particular area? Using recently released data from the Global Terrorism Database, we address these gaps in our knowledge by examining county-level trends in terrorist attacks in the United States from 1970 through 2008.
LaFree, Gary, and Bianca Bersani. 2012. "Hot Spots of Terrorism and Other Crimes in the United States,1970 to 2008." National Consortium for the Study of Terrorism and Responses to Terrorism. (January): http://www.start.umd.edu/start/publications/research_briefs/LaFree_Bersani_HotSpotsOfUSTerrorism.pdf