River Zone: This zone is staffed from the Guerneville substation and covers the Sonoma Coast and unincorporated areas surrounding Guerneville.  In addition to the deputies from the Guerneville substation, there are three resident deputies who patrol the coastal areas.

North Zone: This zone is staffed from the main office and includes the unincorporated areas surrounding Healdsburg, Cloverdale, and Windsor.

Local Zone: This zone is staffed from the main office and includes the unincorporated areas to the north of the city of Santa Rosa.

West Zone: This zone includes the unincorporated areas surrounding Sebastopol. This area is staffed from the main office.

South Zone: This zone is staffed from the main office and includes the unincorporated areas surrounding Petaluma, Rohnert Park, and Cotati.

Valley Zone: This zone is staffed from the Sonoma Valley substation.