Sheriff William P. Mullen


William P. Mullen is the 52nd Sheriff of Allegheny County, elected to terms in 2006, 2009, 2013 and 2017 to serve the region’s 1.2 million citizens. He joined the Sheriff’s Office as Chief Deputy in 2006. 

 His 50-year law enforcement career began in 1969, when hired by the Pittsburgh Police as a patrol officer. He served the force 37 years, working his way through the ranks to Narcotics Detective, Lieutenant for the Homicide, Rape and Robbery Squads, Commander, Assistant Chief of Operations, Assistant Chief of Investigations and Deputy Chief. 

 He received numerous commendations for solving serial rape and murder cases and was recognized by the F.B.I. and D.E.A. for the solution of high-profile investigations.

 He retired as Deputy Chief, second in command of the entire department, responsible for carrying out the Police Chief’s mandates, as well as, the day-to-day oversight of the bureau’s Operations, Investigations and Administration branches.

 Sheriff Mullen is an alumnus of South Catholic High School of Pittsburgh and the University of Dayton, where he earned a bachelor’s degree in Political Science. He is a graduate of the F.B.I. National Academy in Quantico, Virginia and Disaster Management School in Maryland, and has completed law enforcement executive training at the John F. Kennedy School of Government at Harvard University. 

As Sheriff, he graduated from the National Sheriffs’ Institute, participated in the Managing Police Discipline seminar and was heralded as one of the top 50 Irish law enforcement executives by the Irish Echo in New York City. In 2017, Sheriff Mullen was selected and inducted into the Pennsylvania Police Hall of Fame. 

Key accomplishments include: 

- The establishment of a Mortgage Conciliation Program and Foreclosure Assistance Hot line reducing mortgage foreclosures from 4,727 in 2006 to 2,029 in 2019. 

- Implementation of a Courthouse Emergency Response Team for deployment during crisis situations in court facilities. - Enactment of strict fiscal controls limiting agency expenses, enabling the Sheriff’s Office to remain under budget every year Sheriff Mullen has been in office.

- Initiated and oversaw the agency’s official accreditation by the Pennsylvania Law Enforcement Accreditation Commission (PLEAC), for implementing and developing practices and policies to meet prescribed professional standards. The largest Sheriff’s Office in the Commonwealth to obtain this standing, the ACSO is one of only six Sheriff’s Offices in the state accredited by PLEAC. 

- The first to appoint two female supervisors to Commander positions. The Sheriff’s Office has two Commanders, who are the highest-ranking leaders in the Sheriff’s Office, after the Sheriff and Chief Deputy.  Commander Donna Best and Commander Michele Terry are the first female Commanders in the history of the ACSO.  They were appointed to the positions in 2008 and 2010, respectively.  They served with distinction, directing daily operations alongside one another for over five years, until their eventual retirements in 2015 and 2016.

- Procurement of a wheelchair accessible emergency vehicle, at no cost to taxpayers, to transport handicapped prisoners and curtail County tax funds on private ambulance services, making the Sheriff’s Office the first law enforcement agency to offer this specialized form of medical transportation. 

- The introduction of the Project D.U.M.P. initiative, which sends sworn evidence technicians to anonymously collect unwanted narcotic medications from local homes and at community events, to help stop the local drug overdose crisis. 

- Orchestration of an agreement between the U.S. Marshal’s Service and the Allegheny County Jail to lodge federal prisoners transported to Pittsburgh for court appearances. Not only does the arrangement expedite the availability of prisoners for court appointments, it has generated 6 million in revenues for Allegheny County since inception. 

- The acquisition of AED donations for placement in the Allegheny County Courthouse, the Family Court Complex and in all Writ deputy vehicles to supply life-saving aid to individuals in need of critical medical assistance. 

- The peaceful conclusion of the Occupy Pittsburgh encampment at Mellon Green, after all other occupy protest cities had turned violent. The Sheriff’s Office was the first law enforcement agency in the nation effective in the totally passive and orderly removal of all occupy protesters, many of whom had lived and demonstrated at the encampment for over three months. 

- The attainment of mobile fingerprint scanning systems, at no cost to taxpayers, to help deputies identify non-compliant and dangerous individuals encountered on the job. 

- The introduction of a bi-fuel vehicle, obtained at no cost to taxpayers, to reduce environmental impact, decrease carbon emissions and enhance the operational sustainability of the Sheriff’s Office fleet. 

- The creation of the Sheriff’s Office Turkey Roundup, in partnership with Walmart, which supplies free turkey dinners, complete with all the festive trimmings, to thousands of disadvantaged Allegheny County residents each year during the Thanksgiving and Christmas holidays. 

- Establishment of the agency’s annual Shop with a Sheriff platform, which matches underprivileged kids with deputy sheriffs to select apparel, outerwear and toys during the holiday season. This initiative, funded in association with Walmart, has helped thousands of local kids celebrate the holidays since its introduction. 

- Commencement of the Allegheny County Sheriff’s Office Tree of Hope program which has, thanks to friends of the Western PA Pittsburgh Toy Run and Walmart, provides thousands of at need Allegheny County children with presents at Christmas. 

Sheriff Mullen and his wife of 48 years, Judi, live in the City of Pittsburgh. They have two sons and two granddaughters.



Sheriff Kevin M. Kraus

Sheriff's Office Organizational Chart

Command Staff

Key Staff

Employee of the Month

Awards & Commendations


Allegheny County Sheriff's Office Patch

Allegheny County Sheriff's Office
Sheriff Kevin M. Kraus
436 Grant Street
Courthouse, 111
Pittsburgh, PA 15219
Phone - 412.350.4700 | Fax - 412.350.6388

All Rights Reserved.

Allegheny County Sheriff's Office Patch