San Antonio Police Chief Ends Historic 20-Year Tenure
Finn's Take· TL;DR- McManus retiring after 20-year tenure as San Antonio police chief, longest in city history, with crime down 13% overall.
- Career spanned four decades across D.C., Dayton, Minneapolis before leading San Antonio since 2006 with advanced law enforcement education.
- Despite past union tensions and DA conflicts, McManus built strong community relationships and left department positioned for successor's transition.
End of an Era for Nation's Seventh-Largest City
William McManus has worn the city's top law enforcement badge for 20 years and plans to retire by September of this year , marking the end of an unprecedented tenure in San Antonio law enforcement history. McManus will retire in September, ending nearly two decades leading the city's police department, the longest tenure of any police chief in San Antonio history .
The announcement comes as McManus reported overall crime across the city was trending down by 13% at the end of 2025, with crimes against persons declining by 9% and property crimes seeing the largest drop, down by 18.1% . This achievement caps off a career that began in 1975 when he first joined law enforcement in Washington, D.C.
A Career Spanning Four Decades and Four Cities
McManus started his career with the Washington, D.C. Police Department in 1975 and worked his way up the ranks to become Commander of the First District, which includes Capitol Hill and areas of the White House in 1998, and later that same year, he was named assistant chief . His journey to San Antonio included stops as police chief in Dayton, Ohio, and Minneapolis before becoming chief of the Alamo City on April 17, 2006 .
He graduated from the FBI National Executive Institute and National Academy, and the Senior Management Institute for Police at Harvard University's Kennedy School of Government, holding a bachelor's degree from Villanova University in Pennsylvania and a master's degree in management from Johns Hopkins University . His extensive credentials reflect a commitment to professional development that shaped his leadership approach.
Weathering Storms and Building Bridges
McManus's tenure wasn't without controversy. McManus was threatened at times by no confidence votes by the police union, but none came to fruition, and McManus and Bexar County District Attorney Joe Gonzales also exchanged public criticisms of each other's crime-fighting approaches after a spate of officer-involved shootings in 2023 but appeared to mend fences after a public handshake the same year .
Despite past tensions, Danny Diaz, current president of the San Antonio Police Officers' Association, issued a statement praising McManus' leadership, thanking him for his service and wishing him well, noting that "his willingness to engage in open, honest dialogue created a level of communication that was truly unprecedented" . This reconciliation demonstrates McManus's ability to build relationships even amid difficult circumstances.
Legacy and Transition Ahead
City Manager Erik Walsh praised McManus as "an exceptional leader whose incredible experience and steady leadership have strengthened public safety across San Antonio and set an example for other cities nationwide," noting that "he has built strong relationships with our community and with police officers" and "his dedication to service and collaboration has positioned the Department well for the future" .
McManus' retirement announcement with advance notice will give the city time to search for a replacement, and city officials said they would share information on the transition process in the near future . As America's seventh-largest city prepares for new leadership, McManus's two-decade legacy of community policing and crime reduction will serve as the foundation for his successor's work in one of the nation's fastest-growing metropolitan areas.