Investigatory Stop Report Overview

What will you find here? 

An investigatory stop is defined by the Chicago Police Department (CPD) as “a temporary detention and questioning of a person based on Reasonable Articulable Suspicion that the person is committing, about to commit, or has committed a criminal offense.” Investigatory stops can lead to a search of a vehicle or a pat down of an individual if an officer has reasonable suspicion. After they have conducted an investigatory stop, CPD members are required to complete an Investigatory Stop Report (ISR). 

This dashboard provides information on ISRs over time including the reported racial identities of the CPD member and subject and the factor(s) leading to the stop. 

Questions that can be answered by this data set include: 

• What kinds of factors typically lead to an investigatory stop? 
• How has the number of investigatory stops changed over time? 
• What types of reported gang activities typically lead to an investigatory stop? 

Data Sources 

All information presented in these dashboards is based on data stored in CPD databases and Chicago Integrated Personnel and Payroll Systems (CHIPPS), the City’s human resources information system. Records begin January 1, 2016, and the data is typically refreshed daily between 4:00PM and 11:59PM CST. Data is current through the date of last update (listed in the top right corner of the dashboards).