Since 1850 the Sonoma County Sheriff's Office has been providing law enforcement, court security services and detention services to the citizens of Sonoma County. Currently the Department is comprised of over 1,000 employees. Servicing a county of over 1600 square miles and population of nearly 500,000, the Sheriff's Department is responsible for primary law enforcement services of the unincorporated area and the cities of Windsor and Sonoma. These law enforcement services are provided by the over 275 Deputy Sheriffs in the Patrol Bureau, Investigations Bureau, Court Security and Transportation Bureaus.

Main Office Headquarters
The Sonoma County Sheriff's Office moved into a new building on April 19, 2002. This two-story, concrete block structure is over 60,000 square feet and houses the Sheriff's Administrative staff, Investigations Bureau, our Dispatch Bureau, the Crime Scene Investigation Laboratory and is where the majority of patrol staff work.
This building also houses the Central Information Bureau, the Fiscal Bureau, and the entire Administration Division. Employees have access to numerous computer workstations, mobile data computers. Several large conference rooms are available for training and meetings of by all County departments.
Main Adult Detention Facility
The Main Adult Detention Facility (MADF) is located at 2777 Ventura Avenue in the Hall of Justice Complex. The Main Adult Detention Facility (MADF) was opened in 1991. This "new generation" facility was based on a "direct supervision" design, as opposed to the "linear" design of the County's earlier jails. Originally designed to hold close to 500 inmates, the facility quickly reached it's housing capacity and an expansion was opened in 1997 to provide an additional 290 beds. The facility is a medium/maximum security facility, housing both pre-trial and sentenced inmates.

The direct supervision concept at MADF encourages officer contact with inmates and emphasizes the use of interpersonal communication skills. Officers provide a leadership role and make themselves available to inmates by using the new generation/direct supervision model for inmate management.
Currently, facility staffing includes 145 Correctional Officers, 18 sergeants, 5 lieutenants, and one captain. Support staff includes 29 legal processors, 22 detention assistants, 18 cooks and 7 janitors.
The primary duties of a Correctional Officer are the supervision and care of inmates while in custody. In addition to these duties, there are a variety of other assignments and specialty positions Correctional Officers can work. These positions are either incorporated into their daily assigned positions, or are three- year assignments. These positions include:
Specialized Emergency Response Team (SERT)
Facility Training Officer (FTO)
Mental Health Core Officer
Male Special Core Officer
Central Control Officer
Court Holding/Movement Officer
Gang Intelligence Officer
Contact Visiting Officer
Classification Officer
Disciplinary Grievance Officer (DGO)
Program Officer
In addition to the above assignments, two Correctional Sergeants and two Correctional Officers are assigned to the Administration Division as:
Internal Affairs Sergeant
Background Investigations Sergeant
Background Investigator
Training Coordinator
Visitor Information and Guidelines ![]()
Información y Reglas Para Visitantes ![]()
North County Detention Facility

The North County Detention Facility (NCDF) is located five miles north of Santa Rosa at 2254 Ordinance Road. Adjacent to the Charles M. Schulz Airport, the site originally housed the Santa Rosa Army Airfield (SRAAF) during World War II. After WWII, SRAAF was deactivated and subdivided into several parcels. In 1967, one of these parcels became the "honor farm" for 35 minimum security inmates. The facility grew to house the rated capacity of 559 inmates until April 1997, when 172 inmates were moved to the expansion at the Main Adult Detention Facility (MADF).
The NCDF sits on 15.3 acres with 9.62 acres for the facility and 5.91 acres used for the Agriculture Program. Facility inmate programs are coordinated by the Program Officer and benefit both inmates and the county. To be eligible for work crew programs, inmates are classified at booking and cannot have violence charges, escape histories, or disciplinary behavior problems. Currently, there are over 200 work crew inmates in variety of work details on & off site which include:
MADF and NCDF Laundries
Commissary and Food Services
Facility Ground, House Keeping and Janitorial
Cal Trans, Road and Dump Crews
Equipment Garage, Fairgrounds, and Airport
MADF Booking and Sheriff's Car Wash
Supervised Adult Crew and Extras
Agriculture
Currently, facility staffing includes 51 Correctional Officers, 4 sergeants, one lieutenant, and one captain. Support staff includes 7 legal processors.
As with the Main Adult Detention Facility, the primary duties of a Correctional Officer are the supervision and care of inmates while in custody. In addition to these duties, there are a variety of other assignments and specialty positions Correctional Officers can work at NCDF. These positions are either incorporated into their daily assigned positions, or are three- year assignments. These positions include:
Specialized Emergency Response Team (SERT)
Facility Training Officer (FTO)
Classification Officer
Disciplinary Grievance Officer (DGO)
Program Officer
Visitor Information and Guidelines ![]()
Información y Reglas para Visitantes ![]()
The Detention Division is comprised of over 300 Correctional Officers and Support Staff in two facilities. These direct supervision facilities have a combined daily inmate population of nearly 1,200.
Many other services such as Crime Prevention, serving of Civil processes, and the participation in many enforcement task forces the Sheriff's Department is committed to providing professional, firm, fair compassionate law enforcement and detention services with integrity and respect as we partnership with our community.