The Snohomish County Patrol Division is the largest Division within the Sheriff’s Office.  It is the backbone of the Sheriff’s Office.  The Division is made up of several Precincts, Substations and Units.  The Patrol Division is commanded by the Bureau Chief of Field Operations.  Each Precinct and Substation has supervisors, deputies, investigators, and civilians available to service their area based upon calls for service, caseload needs, and contractual agreements.  Support staff from other bureaus and units frequently supplement these precincts as needed to address community needs.  The local substations provide police service directly to the Community.

South Precinct - is located in Mill Creek and encompasses all of south Snohomish County bordering the City of Everett to the north, the Snohomish River to the east, King County to the south and Puget Sound to the west. The densely populated area is like a large city, comprised of concentrated areas of residential communities, commercial and industrial areas.  It has some of the busiest roadways in the County. 

North Precinct - is located in north Marysville and encompasses all of north Snohomish County bordering Skagit County to the north, Chelan County to the east, the City of Everett to the south and Puget Sound to the west. The North Precinct area is suburban with large rural areas made up of farm and National Forest land.   North county also has the Tulalip Indian Reservation in its area. Deputies working the Tulalip Reservation are cross-commissioned to handle tribal members.

East Station handles calls in the East County region.  The East County region borders North Precinct boundaries to the north, King County to the east and south and the Snohomish River to the west. The East County region is made up of mostly rural and residential area and includes small cities, farm and National Forest land.

Stanwood Police Department  is a Sheriff's Office contract,  modeled as a "stand alone" agency, which means it is recognized by the State as a separate police agency for record keeping and statistical purposes.

Snohomish Police Department is the newest Sheriff's Office contract and is specific to the boundaries of the City.  The police department is located in the heart of the city and is recognized by the State as a separate police agency for record keeping and statistical purposes.

Sultan Police Department is a Sheriff's Office contract.  The Sultan Police Department is located right off SR 2 near the center of the city and is recognized by the State as a separate police agency for record keeping and statistical purposes.

Gold Bar Police Department is a Sheriff's Office Regional Contract.  The Gold Bar Police Department is a Sheriff's Office Substation which works in concert with the Sultan Police Department.

Darrington Police Department is a Sheriff’s Office Regional Contract and has 5 deputies that patrol both the Town of Darrington and the Darrington region.  The Darrington Substation is under the direction of the North Precinct.