Undersheriff of San Diego County Sheriff's Department
Undersheriff Mike Barnett has been serving the people of San Diego County as a deputy sheriff since 1991. He served as a deputy sheriff in the Detentions and Law Enforcement Bureaus, then a field training officer at the Vista Station and a detective for several years in San Marcos and at the Central Investigations Division.
In 2001, he was promoted to sergeant and served in the Vista Detention Facility, Vista Station, Internal Affairs Unit, and Special Investigations Division.
In 2006, Undersheriff Barnett was promoted to lieutenant and served in the Vista Detention Facility, Special Investigations Division, and as the commanding officer of the Fallbrook Substation.
In 2011, he was promoted to captain and was selected to command the San Marcos Station. Following a successful tour of duty there, he was selected to oversee the newly formed Information Led Policing Division and thereafter the Personnel Division.
After his promotion to commander in 2014, he oversaw the Human Resource Services Bureau and then the Law Enforcement Services Bureau, Investigations Branch.
In 2015, he was appointed as the assistant sheriff for the Law Enforcement Services Bureau where he oversaw all emergency and regional services for the county, as well as police services in the 9 cities that contract with the sheriff for law enforcement services and the 107 unincorporated communities in the county.
As undersheriff, he serves as the chief deputy of the elected sheriff overseeing all department operations and ensuring San Diego County remains the safest urban county in the nation. He is responsible for the department's $842 million budget and 4,364 authorized employees. The men and women of the San Diego County Sheriff's Department operate 20 patrol stations, 7 detention facilities, 7 Superior Court facilities and the related Civil Division, a nationally accredited Crime Laboratory, and other functions necessary to provide for public safety.
Undersheriff Barnett holds a Bachelor of Arts from San Diego State University and is a graduate of the California POST Supervisory Leadership Institute and the Executive Development Program. He also completed the Senior Management Institute for Police at Boston University and has trained with law enforcement and terrorism experts throughout the United States and in the Middle East. He is a member of the Police Executive Research Forum, the International Association of Chiefs of Police, The San Diego Police Chiefs' and Sheriff's Association, and is a lifetime member of the California State Sheriff’s Association. He lives with his wife and family in North County.