Police and sheriff · New York

Law Enforcement Agencies in Nassau County, New York

24 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 24 law enforcement agencies in Nassau County, New York: the county sheriff's office, 21 city or town police departments and 2 campus police departments.

Sheriff's Office and County Police in Nassau County

  • Nassau County Police DepartmentCounty sheriff or police · ORI NY0290000

City and Town Police Departments in Nassau County

  • Brookville Police DepartmentCity or town police · ORI NY0299800
  • Centre Island Village Police DepartmentCity or town police · ORI NY0294700
  • Floral Park Village Police DepartmentCity or town police · ORI NY0290300
  • Freeport Village Police DepartmentCity or town police · ORI NY0290400 · NIBRS since 2022
  • Garden City Village Police DepartmentCity or town police · ORI NY0290500
  • Glen Cove Police DepartmentCity or town police · ORI NY0290100 · NIBRS since 2025
  • Great Neck Estates Village Police DepartmentCity or town police · ORI NY0293300
  • Hempstead Village Police DepartmentCity or town police · ORI NY0290600 · NIBRS since 2021
  • Kensington Village Police DepartmentCity or town police · ORI NY0294100
  • Kings Point Village Police DepartmentCity or town police · ORI NY0294400
  • Lake Success Village Police DepartmentCity or town police · ORI NY0296300
  • Long Beach Police DepartmentCity or town police · ORI NY0290200
  • Lynbrook Village Police DepartmentCity or town police · ORI NY0290700 · NIBRS since 2025
  • Malverne Village Police DepartmentCity or town police · ORI NY0293900
  • Muttontown Police DepartmentCity or town police · ORI NY0299700
  • Old Brookville Village Police DepartmentCity or town police · ORI NY0297200
  • Old Westbury Village Police DepartmentCity or town police · ORI NY0294300 · NIBRS since 2020
  • Oyster Bay Cove Village Police DepartmentCity or town police · ORI NY0298800
  • Port Washington Police DepartmentCity or town police · ORI NY0295500
  • Rockville Centre Village Police DepartmentCity or town police · ORI NY0290900
  • Sands Point Village Police DepartmentCity or town police · ORI NY0293500

College and University Police in Nassau County

  • State University of New York Police: Old WestburyCollege or university police · ORI NY229UN00
  • United States Merchant Marine AcademyCollege or university police · ORI NY0299300

Where People Arrested in Nassau 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 New York 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 Nassau County?
The FBI lists 24 law enforcement agencies in Nassau County, including 21 city or town police departments. The full list is on this page.
Who runs the jail in Nassau County?
See Nassau County Recent Arrests (NY State Police) on this site for who runs the jail in Nassau County and how to reach it.
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 NY0294100. It is useful when you request records or read crime statistics.