Police and sheriff · Michigan

Law Enforcement Agencies in Washtenaw County, Michigan

13 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 13 law enforcement agencies in Washtenaw County, Michigan: the county sheriff's office, 7 city or town police departments, 1 state police post, 3 campus police departments and 1 other agency.

Sheriff's Office and County Police in Washtenaw County

  • Washtenaw County Sheriff's OfficeCounty sheriff or police · ORI MI8118100 · NIBRS since 1995

City and Town Police Departments in Washtenaw County

  • Ann Arbor Police DepartmentCity or town police · ORI MI8121800 · NIBRS since 2003
  • Chelsea Police DepartmentCity or town police · ORI MI8131000 · NIBRS since 1995
  • Milan Police DepartmentCity or town police · ORI MI8158400 · NIBRS since 1995
  • Northfield Township Police DepartmentCity or town police · ORI MI8196400 · NIBRS since 1996
  • Pittsfield Township Police DepartmentCity or town police · ORI MI8190600 · NIBRS since 1995
  • Saline Police DepartmentCity or town police · ORI MI8172800 · NIBRS since 1995
  • Ypsilanti Police DepartmentCity or town police · ORI MI8183600 · NIBRS since 1995

State Police in Washtenaw County

  • State Police: Washtenaw CountyState police · ORI MI8108100 · NIBRS since 1998

College and University Police in Washtenaw County

  • Eastern Michigan UniversityCollege or university police · ORI MI8136600 · NIBRS since 1995
  • University of Michigan: Ann ArborCollege or university police · ORI MI8190300 · NIBRS since 1995
  • Washtenaw Community CollegeCollege or university police · ORI MI8180500 · NIBRS since 2018

Other Law Enforcement Agencies in Washtenaw County

  • Huron-Clinton Metropolitan Authority: Hudson Mills MetroparkOther agency · ORI MI8186600 · NIBRS since 1998

Where People Arrested in Washtenaw 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 Michigan 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 Washtenaw County?
The FBI lists 13 law enforcement agencies in Washtenaw County, including 7 city or town police departments. The full list is on this page.
Who runs the jail in Washtenaw County?
In most counties the sheriff runs the county jail. In Washtenaw County that is the Washtenaw County Sheriff's Office. See Washtenaw 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 MI8190600. It is useful when you request records or read crime statistics.