Sep 2019

Results of the Chicago Inmate Survey of Gun Access and Use

Harold Pollack Kailey White Philip Cook

A comprehensive study of underground (or illicit) gun markets and information about how individuals at elevated risk for violence obtained guns.

Related Resources
Key Findings: The Chicago Inmate Survey of Gun Access and Use (CIS)
Report

Key Findings: The Chicago Inmate Survey of Gun Access and Use (CIS)

Nov 2019

Latest Updates

Curbing gun violence in Chicago doesn’t require that we first end poverty
Op-Ed
Chicago Tribune
Oct 2025

Curbing gun violence in Chicago doesn’t require that we first end poverty

Crime Lab leaders Katie Hill and Jens Ludwig penned an op-ed in the Chicago Tribune highlighting the root causes of gun violence and the growing body of research showing that increased neighborhood vibrancy generates surprisingly large changes in the prevalence of gun violence, by as much as 30%.

A fighting chance
Media Mention
The University of Chicago Magazine
Oct 2025

A fighting chance

In The University of Chicago Magazine’s Fall ’25 issue, Susie Allen profiles Crime Lab Pritzker Director Jens Ludwig to discuss his book, “Unforgiving Places,” which challenges conventional wisdom on gun violence and suggests new approaches to solving the problem.

Researchers: Violence intervention and policing should complement, not compete against, each other
Op-Ed
Chicago Tribune
Oct 2025

Researchers: Violence intervention and policing should complement, not compete against, each other

The Crime Lab’s Executive Director Katie Hill and Pritzker Director Jens Ludwig discuss evidence-based solutions to crime, including violence intervention and data-driven policing, in an op-ed for the Chicago Tribune.