The San Mateo County Probation Department is governed by the San Mateo County. The San Mateo County Probation Department provides law enforcement services for the protection of citizens. It also offers opportunities for juveniles and adults to become social and the contributing members of the community. The department provides substance abuse prevention and mental health treatment services and cognitive-based and vocational programs. The San Mateo County Probation Department operates adult, institutions services and juvenile services divisions. Its divisions offer domestic violence, investigation and family preservation services. San Mateo County Probation Department is located in Redwood City, Calif. San Mateo County operates human resources, parks, information services, planning and building, health, probation and public works departments.