St. Louis County, Missouri

St. Louis County officer and vehicle

St. Louis County Police Badge

Site LE Agency
St. Louis County Police Department

Site Focus
Violent crime reduction

SPI Strategy
Crime analysis assessment

Site Cohort

Site Profile
Large urban area of 370 sq. miles with a population of ~400,000

Project Overview

St. Louis County is a department consisting of eight main precincts, with varying demographics, yet the prevalent crime types in each are auto theft, larcenies, and aggravated assault with a firearm. The Uniform Crime Reporting (UCR) summary data from 2017-2019 shows a clear increase of these crime types between 2018 and 2019, though increases are not evenly distributed across the patrol areas. Currently, the Department patrols the 370+ square miles of unincorporated St. Louis County and 88 additional municipalities within the County. In 2015, the Police Executive Research Forum (PERF) published a report describing the fragmentation in the St. Louis area and how the involvement of various law enforcement agencies leads to confusion and fragmented data sharing. In an effort to address the fragmented data sharing, the Department’s project will enhance the already implemented CARA system (Computer Aided Entry System), which others agencies use with limited sharing abilities. The proposed enhancements will include developing a dashboard for all users, develop reporting functions for agencies with limited staff capabilities, eliminate reliance on an analyst to data before it’s accessible, and further integrate the software as the primary data system.

Data Highlight

  • From 2017-2018, motor vehicle thefts increased by 33%:
    • Affton Southwest experienced the highest increase of 74%, with 97 in 2017 and 167 in 2019.
    • North County is reports the most motor vehicle theft, with 328 in 2017 and 601 in 2019.
  • Between 2018-2019, aggravated assaults rose 21% overall, but the increases were most notable in Central County (+97%).