William P. Mullen is the 53rd Sheriff of Allegheny County, consecutively elected in 2007, 2009 and 2013 to serve the region’s 1.2 million citizens. 

Sheriff Mullen’s law enforcement career extends over 41 years.  He was formerly Deputy Chief and second in command of the Pittsburgh Police, where he was responsible for the management and supervision of all City investigations involving major crimes such as homicide, rape, robbery and narcotics and the daily oversight of the City’s six police zones.  After joining the force as a patrol officer in 1969, he was promoted through the ranks serving as Narcotics Detective, Homicide Lieutenant, Commander, Assistant Chief of Operations and Assistant Chief of Investigations. He received numerous commendations for solving serial rape and murder cases and was also recognized by the F.B.I. and the D.E.A. for the solution of high-profile investigations.

An alumnus of the University of Dayton, with a bachelor’s degree in Political Science, and South Catholic High School of Pittsburgh, Sheriff Mullen is also a graduate of the F.B.I. National Academy in Quantico, Virginia, Disaster Management School in Emmitsburg, Maryland, the John F. Kennedy School of Government at Harvard University, the National Sheriffs' Institutue in Longwood, Colorado and Managing Police Discipline in Myrtle Beach, South Carolina.

William P. Mullen

Allegheny County Sheriff
2006 - Present


Sheriff Mullen has been honored by several institutions outside of his own, including the Federal Bureau of Investigations (FBI), the Drug Enforcement Agency (DEA), City of Pittsburgh's City Council and the Irish Echo Newspaper in New York City.

Other present accomplishments include:

  • Directed and implemented a more efficient re-organization of the Office.
  • Reduced the Office’s fleet of unmarked vehicles and the number of Office issued cellular telephones.
  • Established a Most Wanted Fugitives Website, a Most Wanted Firearms Violations Fugitives Website and a Dead-Beat Parents Website listing the County’s top offenders owing child support.
  • Introduced mandates preventing the Sheriff Sale of homes belonging to U.S. veterans, which prevented the sale of a veteran’s home in Allegheny County.
  • Established Mortgage Conciliation Program and Foreclosure Assistance Hotline to help individuals facing mortgage foreclosure.
  • Closed loophole in Sheriff Sale procedures, which resulted in saving a senior citizen’s property in Allegheny County.
  • Purchased a wheelchair accessible emergency vehicle to transport handicapped prisoners at no cost to taxpayers, an initiative projected by the
  • Health Department to save the County over $500,000 in private ambulance services.
  • Established a Courthouse Emergency Response Team for deployment during potential hostage situations, insurgencies and prisoner escape attempts occurring within Court facilities.
  • Acquired two explosive-detecting K-9s for use in Court facilities, at no cost to taxpayers.
  • Installed laptop computers in Sheriff’s vehicles to automate systems and provide the most efficient service of civil process, at no cost to taxpayers.
  • Purchased new radios and tasers for Deputy Sheriffs, at no cost to taxpayers.
  • Promoted Go Green efforts within the Office by procuring grant funding for an automated computer reporting system to minimize paperwork and generate a more competent report tracking process, at no cost to taxpayers.
  • Acquired patrol rifles for all vehicles assigned to work within communities comprising the County’s 13 Writ Districts, at no cost to taxpayers.
  • Enrolled all Transportation Deputies in the Law Enforcement Officers Flying Armed training course conducted by the U.S. Dept. of Homeland
  • Security Transportation Security Administration.
  • Required Deputies to receive innovative training on critical, job-related subjects such as courthouse security, hostage negotiations, terrorism and warrant service.
  • Obtained grant funding to implement a standardized PA Firearms License to Carry computer system, at no cost to taxpayers. Also obtained grant funding to conduct saturation patrols and warrant sweep operations in troubled neighborhoods.
  • Launched the Sheriff’s Office’s Interactive Tip Sheet to enable citizens to place anonymous tips via the Internet about warrant suspects.
  • Partnered with Comcast to create the On-Demand “Fugitive Files” television program.
  • Acquired needed computer equipment in alliance with Highmark, at no cost to taxpayers.
  • Established a Sheriff’s Office Facebook Page and Twitter account to help citizens stay up to update on important public safety issues.
  • Committed Deputies to law enforcement task forces working on major investigations. Deputies are credited for dismantling key gang and drug networks — including the largest street gang in Allegheny County history — influencing the ascension of crime in the Braddock, Clairton, Hazelwood, Homewood and McKeesport Areas.
  • Selected by the NRA to appear on their promotional flyers for the Eddie Eagle GunSafe® Program. Distributed to over 18,000 law enforcement agencies in the U.S., the flyers inform law enforcement officers of eligibility to receive free program materials for children.
  • Co-Sponsored the Terry Fleck K-9 Seminar with District Attorney Stephen Zappala, feted as the largest K-9 seminar in the Greater Pittsburgh area.
  • Elected as Trustee of the Pennsylvania Sheriffs’ Association.

Sheriff Mullen is also an active member of the following organizations:

  • Member, U.S. Attorney’s Law Enforcement Agency Directors (LEAD)
  • Member, F.B.I.’s Anti-Terrorism Advisory Council (ATAC)
  • Member, Criminal Justice Advisory Board
  • Member, County Executive’s Public Safety Vision Team
  • Member, U.S. Attorney’s Community Police Relations Committee
  • Member, Allegheny County Jail Oversight Board
  • Trustee and Member, Pennsylvania Sheriffs’ Association