The purpose of this report is to use data from a sample of recently booked arrestees in Maricopa County to examine the scope and nature of Maricopa County’s gang problem. In particular, this report supplements data presented in the bi-annual report on gangs conducted by the Arizona Criminal Justice Commission, which relies on official police data and their occasional white paper on gangs that relies on self-report data from school youth. We organized our analyses around six research questions: (1) what proportion of adult arrestees are involved in a gang, and what are the socio-demographic differences between those who are associated with a gang and those who are not; (2) what are the rituals associated with gang joining; (3) how do gang and non-gang arrestees differ in their experiences with crime, drug use and victimization; (4) what is the organizational structure and composition of gangs; (5) how do members socially identify with their gang; and (6) how and why do members leave their gang?

Maricopa County has experienced remarkable population growth for decades, and will continue to do so. But while expanding metro areas tend to pay close attention to physical infrastructure—diligently budgeting for roads, sewers, schools and the like—there is often a relative lack of attention to meeting the future demands for human services. Relying on the expertise from throughout the College of Public Programs, this report analyzes 12 critically important topics, including children and families, poverty, substance abuse, and Latinos.