John McMahon was appointed Sheriff-Coroner of San Bernardino County by the Board of Supervisors on December 31, 2012.
He is known for his tough-on-crime philosophy and a soup-to-nuts knowledge of the law enforcement strategies to keep our neighborhoods, schools, and businesses safe.
John began his career with the San Bernardino County Sheriff’s Department in 1985 as a patrol deputy at the Needles Police/Sheriff’s Station. When promoted to sergeant in November 1994, he was assigned supervisory positions in the Detentions and Corrections, Patrol, and Administrative Support Bureaus.
Covering over 20,000 square miles with over 2 million people residing within the county, John is responsible for all public safety services for the unincorporated areas, he operates the county jail system, provides marshal services in the county superior courts, and supervises 14 contract city law enforcement agreements.
John leads one of California’s largest and most diverse departments of 1716 sworn deputies, 1540 professional employees and 1844 volunteers on an annual budget of 488 million dollars.
He has an Associate of Science Degree in Criminal Justice from Victor Valley College, and a Bachelor of Science Degree in Criminal Justice Management from Union Institute & University. He is certified as a Jail Manager through the American Jail Association, and is a graduate of the Los Angeles Police West Point Leadership Program. John was also inducted into the Victor Valley College Alumni Hall of Fame in 2007.
John and his wife Michelle of 23 years have two daughters, Abby and Ally.