Zone 1:

River Zone 557 square miles.  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.

Zone 2:

North Zone 472  square miles.  This zone is staffed from the main office and includes the unincorporated areas surrounding Healdsburg, Cloverdale, and Windsor.

Zone 3:

Local Zone 63 square miles.  This zone is staffed from the main office and includes the unincorporated areas to the north of the city of Santa Rosa.

Zone 4:

West Zone 71 square miles.  This zone includes the unincorporated areas surrounding Sebastopol. This area is staffed from the main office.

Zone 5:

South Zone 171 square miles.  This zone is staffed from the main office and includes the unincorporated areas surrounding Petaluma, Rohnert Park, and Cotati.

Zone 6:

Valley Zone 156 square miles.  This zone is staffed from the Sonoma Valley substation.

Zone 7:

Roseland Zone 80 square miles.  This zone is staffed out of the main office and covers portions of the unincorporated areas to the south of the city of Santa Rosa.