Police and sheriff · Wisconsin

Law Enforcement Agencies in Milwaukee County, Wisconsin

23 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 23 law enforcement agencies in Milwaukee County, Wisconsin: the county sheriff's office, 19 city or town police departments, 2 campus police departments and 1 other agency.

Sheriff's Office and County Police in Milwaukee County

City and Town Police Departments in Milwaukee County

State Agencies in Milwaukee County

College and University Police in Milwaukee County

Where People Arrested in Milwaukee 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 Wisconsin 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 Milwaukee County?
The FBI lists 23 law enforcement agencies in Milwaukee County, including 19 city or town police departments. The full list is on this page.
Who runs the jail in Milwaukee County?
In most counties the sheriff runs the county jail. In Milwaukee County that is the Milwaukee County Sheriff's Office. See Milwaukee 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 WI0410800. It is useful when you request records or read crime statistics.