The Bergen County Sheriff's Office is the largest law enforcement agency in Bergen County. Comprised of more than 600 dedicated personnel, the Office's responsibilities include a broad range of services and functions which assist the public, augment the county's municipal police departments and safeguard Bergen's judicial proceedings. With a population larger than that of many states, safeguarding the almost 1 million residents of Bergen County is a full-time job.

The Sheriff's Office is a 24-hour operation staffed by some of the best and most well-trained officers and civilians working in the field of law enforcement today. The Sheriff's Office is tasked with maintaining order and security at the Bergen County Justice Center, providing for the care and custody of more than 1,000 inmates and detainees at the Bergen County Jail and assisting the county's 68 municipal police departments by providing advanced forensic procedures through its Bureau of Criminal Investigation. The Sheriff's Office provides patrol and protection of county roads, parks and critical infrastructure as well as assists local law enforcement agencies throughout the county.  Additionally, the Office is responsible for process serving, writs, court orders, foreclosures and court executions.