Kenneth Binder
Sheriff of San Mateo County

Sheriff Kenneth Binder, a law enforcement leader with nearly three decades of service, was sworn in as San Mateo County’s 27th Sheriff on Nov. 12, 2025. A career public servant, he is known for his leadership, integrity and commitment to organizational excellence.

Sheriff Binder considers serving as San Mateo County’s Sheriff the honor of a lifetime. He is committed to ensuring well-trained and professional delivery of public safety services by the men and women of the Sheriff’s Office, who are deeply devoted to serving and protecting our communities.

Before becoming San Mateo County’s Sheriff, Sheriff Binder had a distinguished 27-year career in law enforcement. He honorably retired with the Santa Clara County Sheriff’s Office in 2024 after serving in nearly every division of the agency and as a member of the Executive Team for more than a decade. As Undersheriff in Santa Clara County, he oversaw all operations, managed a $551 million budget and led nearly 1,800 sworn and professional staff. He also guided major reforms within the county jails, implementing best practices and driving significant policy improvements across the organization.

Following his retirement from Santa Clara County, Sheriff Binder served as Interim Chief of Police for the City of Gilroy.

Sheriff Binder holds a Master of Arts in Criminal Justice from Arizona State University and a Bachelor of Science in Business Administration (Finance) from San José State University. He is also a proud graduate of the FBI National Academy, Class 248.

Upon taking his Oath of Office, Sheriff Binder pledged to be a “Sheriff of Service,” a commitment that will define his tenure. Sheriff Binder is proud to now call San Mateo County home.