Law Enforcement Agencies in Jefferson County, New York
14 agenciesFBI UCR list
The FBI's Uniform Crime Reporting program lists 14 law enforcement agencies in Jefferson County, New York: the county sheriff's office and 13 city or town police departments.
Sheriff's Office and County Police in Jefferson County
Jefferson County Sheriff's OfficeCounty sheriff or police · ORI NY0220000 · NIBRS since 2020
City and Town Police Departments in Jefferson County
Adams Village Police DepartmentCity or town police · ORI NY0222000
Alexandria Bay Village Police DepartmentCity or town police · ORI NY0222100
Black River Police DepartmentCity or town police · ORI NY0223400
Brownville Village Police DepartmentCity or town police · ORI NY0222300
Cape Vincent Village Police DepartmentCity or town police · ORI NY0222600
Carthage Village Police DepartmentCity or town police · ORI NY0223800
Clayton Village Police DepartmentCity or town police · ORI NY0222800
Dexter Village Police DepartmentCity or town police · ORI NY0222400
Glen Park Village Police DepartmentCity or town police · ORI NY0222500
Sackets Harbor Village Police DepartmentCity or town police · ORI NY0223300
Theresa Village Police DepartmentCity or town police · ORI NY0223700
Watertown Police DepartmentCity or town police · ORI NY0220100 · NIBRS since 2021
West Carthage Village Police DepartmentCity or town police · ORI NY0222700
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.
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 14 law enforcement agencies in Jefferson County, including 13 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 Recent Arrests (NY State Police) 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 NY0223300. It is useful when you request records or read crime statistics.
