Police and sheriff · Texas

Law Enforcement Agencies in Williamson County, Texas

25 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 25 law enforcement agencies in Williamson County, Texas: the county sheriff's office, 15 city or town police departments, 1 campus police department and 8 other agencies.

Sheriff's Office and County Police in Williamson County

  • Williamson County Sheriff's OfficeCounty sheriff or police · ORI TX2460000 · NIBRS since 2018

City and Town Police Departments in Williamson County

  • Austin Police DepartmentCity or town police · ORI TX2270100 · NIBRS since 2019
  • Bartlett Police DepartmentCity or town police · ORI TX0140100 · NIBRS since 2025
  • Cedar Park Police DepartmentCity or town police · ORI TX2460900 · NIBRS since 2019
  • Florence Police DepartmentCity or town police · ORI TX2460100 · NIBRS since 2018
  • Georgetown Police DepartmentCity or town police · ORI TX2460200 · NIBRS since 2003
  • Granger Police DepartmentCity or town police · ORI TX2460300 · NIBRS since 2021
  • Hutto Police DepartmentCity or town police · ORI TX2460400 · NIBRS since 2020
  • Jarrell Police DepartmentCity or town police · ORI TX2462500 · NIBRS since 2018
  • Leander Police DepartmentCity or town police · ORI TX2461700 · NIBRS since 2019
  • Liberty Hill Police DepartmentCity or town police · ORI TX2462400 · NIBRS since 2020
  • Pflugerville Police DepartmentCity or town police · ORI TX2270900 · NIBRS since 2017
  • Round Rock Police DepartmentCity or town police · ORI TX2460500 · NIBRS since 2020
  • Taylor Police DepartmentCity or town police · ORI TX2460600 · NIBRS since 2020
  • Thorndale Police DepartmentCity or town police · ORI TX1660300 · NIBRS since 2015
  • Thrall Police DepartmentCity or town police · ORI TX2461800 · NIBRS since 2024

College and University Police in Williamson County

  • Southwestern UniversityCollege or university police · ORI TX2460800 · NIBRS since 2019

Other Law Enforcement Agencies in Williamson County

  • Independent School District: HuttoOther agency · ORI TX2462800 · NIBRS since 2019
  • Independent School District: JarrellOther agency · ORI TX2463300 · NIBRS since 2024
  • Independent School District: Liberty HillOther agency · ORI TX2463000 · NIBRS since 2022
  • Independent School District: Round RockOther agency · ORI TX2463100 · NIBRS since 2021
  • Williamson County Constable: Precinct 1Other agency · ORI TX2460700 · NIBRS since 2023
  • Williamson County Constable: Precinct 2Other agency · ORI TX2462000 · NIBRS since 2023
  • Williamson County Constable: Precinct 3Other agency · ORI TX2461100 · NIBRS since 2023
  • Williamson County Constable: Precinct 4Other agency · ORI TX2461200 · NIBRS since 2023

Where People Arrested in Williamson 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 Texas 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 Williamson County?
The FBI lists 25 law enforcement agencies in Williamson County, including 15 city or town police departments. The full list is on this page.
Who runs the jail in Williamson County?
In most counties the sheriff runs the county jail. In Williamson County that is the Williamson County Sheriff's Office. See Williamson 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 TX2460000. It is useful when you request records or read crime statistics.