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Patrol Division

Officers assigned to the Patrol Division work a 12-hour Pitman schedule (two-on, two-off; three-on, two-off; two-on, three-off), and work either 6AM-6PM or 6PM-6AM.  Officers remain on the same patrol crew for a year and rotate from days to nights every three months.  Our patrol officers have every other weekend off and only work half the days out of the month.  In addition, officers working in the patrol division receive 24 additional benefit hours every 6 months to compensate for shift briefings.

Job duties include, responding to calls for service, crash investigation, traffic enforcement, criminal patrol, and engaging the members of our community, as well as those visiting the City of O’Fallon.

Investigations Division

The Criminal Investigations Division of the O’Fallon Police Department supports the Patrol Division of the department by conducting reactive and proactive follow-up investigations of reported criminal activity. Such follow-up includes interviewing victims and witnesses, interrogating suspects, processing crime scenes and preparing criminal cases to be presented to the St. Clair County State’s Attorney for arrest and/or search warrants. Personnel assigned to this division possess special knowledge and skills in interviewing/ interrogation, crime scene processing, interpersonal communication and criminal law.

Detectives within the Division serve as active members with the Major Case Squad of Greater St. Louis, the Southern Illinois Child Death Investigative Task Force, the Internet Crimes Against Children Task Force and the Central and Southern Illinois Financial and Cyber Crime Task Force.

Metro East Communications Center

MECOMM (Metro East Communications Center) serves as a consolidated Communications Center located in the O’Fallon Police Department.  Beyond providing primary call answering and dispatch services for the O’Fallon Police Department, MECOMM dispatches for two other police departments, three fire departments and one EMS agency.  MECOMM is the dedicated dispatch center for MABAS (Mutual Aid Box Alarm System) Division 32, which is comprised of multiple Fire Departments throughout the region.  MECOMM Telecommunicators dispatch approximately 100,000 calls for service per year, nearly 26% come from 9-1-1.  To ensure effecting processing of information, MECOMM utilizes multiple state-of-the-art computer programs.

Learn more about MECOMM

Our Community Service Officer (CSO) Program consists of (6) individuals, 18 years of age or older, who are interested in the field of law enforcement. These individuals supplement the divisions within the department. CSOs are responsible for prisoner care, responding to quality of life calls, and assisting with special events.


One sworn police officer is assigned as the School Resource Officer for O’Fallon Township High School. This individual is responsible for patrolling the campus and working with school staff to ensure a safe and secure environment for the students.


In addition to standard assignments within both the Patrol and Investigations Division, many other opportunities to develop your career are available. Four officers are assigned to the ILEAS Region 8 Special Response Team, in addition to their normal duties. Additionally, one officer is assigned to the Metropolitan Enforcement Group of Southern Illinois drug task force, and one officer is assigned to the D.E.A. task force on a full-time basis.

A sense of community and purpose

Being a police officer means being part of the community.  We take pride in our town and actively seek opportunities to engage with the residents of our community.  We accomplish this mission through our numerous community engagement efforts, including:

  • Neighborhood BBQs
  • Citizens Police Academy
  • Youth Academy
  • Police Explorer Post
  • Honor Guard
  • Elder Service Program
  • Night to Unite
  • Educational Presentations

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