Police and sheriff · Missouri

Law Enforcement Agencies in Jefferson County, Missouri

13 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 13 law enforcement agencies in Jefferson County, Missouri: the county sheriff's office, 10 city or town police departments, 1 campus police department and 1 other agency.

Sheriff's Office and County Police in Jefferson County

  • Jefferson County Sheriff's OfficeCounty sheriff or police · ORI MO0500000 · NIBRS since 2020

City and Town Police Departments in Jefferson County

  • Arnold Police DepartmentCity or town police · ORI MO0500700 · NIBRS since 2020
  • Byrnes Mill Police DepartmentCity or town police · ORI MO0501500 · NIBRS since 2020
  • Crystal City Police DepartmentCity or town police · ORI MO0500100 · NIBRS since 2020
  • De Soto Police DepartmentCity or town police · ORI MO0500200 · NIBRS since 2022
  • Eureka Police DepartmentCity or town police · ORI MO0952600 · NIBRS since 2020
  • Festus Police DepartmentCity or town police · ORI MO0500300 · NIBRS since 2020
  • Herculaneum Police DepartmentCity or town police · ORI MO0500800 · NIBRS since 2020
  • Hillsboro Police DepartmentCity or town police · ORI MO0500400 · NIBRS since 2020
  • Kimmswick Police DepartmentCity or town police · ORI MO0500500 · NIBRS since 2021
  • Pevely Police DepartmentCity or town police · ORI MO0500600 · NIBRS since 2020

College and University Police in Jefferson County

  • Jefferson CollegeCollege or university police · ORI MO0501900 · NIBRS since 2020

Other Law Enforcement Agencies in Jefferson County

  • Dunklin R-5 School DistrictOther agency · ORI MO0502100 · NIBRS since 2020

Where People Arrested in Jefferson County Are Held

In most U.S. counties, adults arrested by city police, the sheriff or state troopers are booked into the county jail first. Some larger cities run their own holding jail, so if a person is not on the county roster, call the arresting department.

Law Enforcement in Other Missouri Counties

Agency names, types and ORI codes come from the FBI Crime Data Explorer agency list, retrieved November 2026. NIBRS dates show when an agency began reporting incident-level crime data to the FBI.

Frequently Asked Questions

How many police departments are in Jefferson County?
The FBI lists 13 law enforcement agencies in Jefferson County, including 10 city or town police departments. The full list is on this page.
Who runs the jail in Jefferson County?
In most counties the sheriff runs the county jail. In Jefferson County that is the Jefferson County Sheriff's Office. See Jefferson County Jail on this site for the jail's roster or contact details.
What is an ORI number?
An ORI is the nine-character identifier the FBI assigns to each law enforcement agency for crime reporting, for example MO0500300. It is useful when you request records or read crime statistics.