St. Charles County
County record. Includes every city and agency within St. Charles County.
Technology presence
What these categories mean
- ALPR
- Automated license plate readers (ALPR): camera systems that automatically capture, read, and log vehicle license plates with location and time, producing a searchable record of vehicle movements.
- Fixed cameras & RTCC
- Agency-operated fixed video cameras and the real-time crime centers (RTCC) that aggregate live and recorded feeds for monitoring. Extends the Electronic Frontier Foundation's Atlas, which enumerates real-time crime centers and camera registries but not standalone fixed-camera estates.
- Face recognition
- Software that matches faces in images or video against a reference database to identify or verify individuals.
- Drones / UAS
- Uncrewed aerial systems (UAS), commonly called drones, operated by an agency for overhead observation, imaging, or sensing.
- Gunshot detection
- Networks of acoustic sensors that detect and locate suspected gunfire and alert an agency.
- Body-worn & dashcam
- Officer body-worn and in-vehicle dashboard cameras that record encounters; public access to the footage is frequently restricted.
- Doorbell & camera registry
- Programs that give an agency access to privately owned camera footage: doorbell-camera partnerships, citizen camera registries, and private-camera integration platforms.
- Cell-site simulators
- Devices that mimic cell towers to locate or identify nearby mobile phones. They are often called Stingrays, or IMSI catchers after the international mobile subscriber identity (IMSI) number that identifies each phone on a network. Adjacent: communications surveillance outside the visual/sensor core.
- Predictive policing
- Software that forecasts where crime may occur or who may be involved, to direct policing. Adjacent: analytics rather than a sensing deployment.
- Social-media monitoring
- Tools that collect and analyze public social-media activity for an agency. Adjacent: open-source/communications monitoring outside the visual/sensor core.
The record, by agency
Saint Charles County Police Department
The Saint Charles County Police Department operates eight Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
Cottleville Police Department
The Cottleville Police Department operates two Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
Lake Saint Louis Police Department
The Lake Saint Louis Police Department operates 15 Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
O'Fallon Police Department
The O'Fallon Police Department operates 43 Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
Saint Peters Police Department
The Saint Peters Police Department operates 11 Flock Safety automated license plate readers as of September 2025.
Sources (via the EFF Atlas): Pittsboro Police Department
Wentzville Police Department
As of April 2024, the Wentzville Police Department operates 25 Flock Safety automated license plate readers. The agency stores ALPR data for 30 days.
Sources (via the EFF Atlas): Flock SafetyThe News & ObserverThe News & Observer
The Wentzville Police Department operates two DJI drones as of 2018, according to data compiled by the Center for the Study of the Drone at Bard College.
Sources (via the EFF Atlas): Center for the Study of the Drone at Bard Collegewentzvillemo.iqm2.comfox2now.com
The Wentzville Police Department began using body-worn cameras in 2012.
Sources (via the EFF Atlas): KMOV4Axon Enterprises
O’Fallon Police Department
The O’Fallon Police Department uses Flock Safety automated license plate readers.
Sources (via the EFF Atlas): Fox 2
St. Charles County Police Department
The St. Charles County Police Department operates one drone as of 2020, according to data compiled by the Center for the Study of the Drone at Bard College.
Sources (via the EFF Atlas): Center for the Study of the Drone at Bard Collegewww.faa.gov
The St. Charles County Police Department maintains a voluntary registry of private and personal surveillance cameras.
Sources (via the EFF Atlas): St. Charles County
St. Charles Police Department
The Saint Charles Police Department has 105 body-worn cameras as of 2019.
Sources (via the EFF Atlas): KMOV4 news
The St. Charles Police Department scanned 576,925 license plates in 2019 using Vigilant Solutions automated license plate readers.
Sources (via the EFF Atlas): MuckRock
The St. Charles Police Department maintains a voluntary registry of private and personal surveillance cameras.
Sources (via the EFF Atlas): St. Charles Police Department
Source: EFF Atlas of Surveillance (Electronic Frontier Foundation & University of Nevada, Reno — Reynolds School of Journalism) · CC BY 4.0 · retrieved July 2026