The Patrol Division is responsible for the protection of life and property, and the enforcement of federal, state and county laws and ordinances. The patrol function involves the prevention and intervention of adult and juvenile crime, rendering assistance to citizens in need of service, apprehension of law violators, and traffic enforcement. Patrol responds to calls for service as dispatched, and prepares reports on action taken or other documentation, for use in record keeping and prosecution purposes.

Marathon County is the largest of Wisconsin 's 72 counties with an area of 1,584 square miles. Our deputies patrol 3,270 miles of federal, state and local roadways. The county population is approximately 128,000 people and has grown by over 25% in the past 25 years.


Specific duties include but are not limited to:

•  Enforcement of all State Motor Vehicle Laws (criminal & civil)

•  Investigation of traffic crashes (to include Crash Reconstruction when applicable)

•  Preliminary investigation of property crimes & crimes against persons

•  Preliminary investigation of sudden deaths

•  Response to civil disputes and aid to citizens

•  Response to disasters (natural & man-made)

•  Provide security for special events

Courthouse Security

Another function of the Patrol Division is Courthouse Security. Sheriff's Deputies are assigned to the courthouse security on a full-time basis. They respond to alarms throughout the courthouse and respond to various court rooms to take people into custody per court orders.

In addition, the staff provides security during "flagged" hearings where problems are anticipated, e.g., divorce hearing. They also provide security during high-profile trials as well as provide routine physical security and patrol of the Courthouse.

Reserve Deputy Program

The Uniformed Reserve Deputy Program is established and organized to compliment the regular Uniformed Patrol Division of the Marathon County Sheriff's Department. The part-time Reserve Deputies perform many of the same general duties of the regular Patrol force. The specific focus of the Reserve Deputy Program centers on weekend business security checks and supplemental security enforcement at special events.

The Reserve Deputy force is staffed by a total of 10 part-time sworn Deputies. The program is coordinated by the Patrol Captain and one assigned Lieutenant. The Reserve Deputies are normally assigned to assist the regular force during peak activity on weekends and holidays.

Fleet Services

Fleet Services is also under the auspices of the Patrol Division. Fleet Services is manned by one full-time and one part-time employee. It is responsible for keeping the Sheriff's Department's motorized units up and running. The fleet includes all squad cars (marked & un-marked), transport vehicles, S.W.A.T. Team vehicle, Dive Team van, snowmobiles, boats and ATVs.

DNR Grant Funded Programs & Safety Programs  / ATV, Boat, Snowmobile Patrol 

The Marathon County Sheriff's Department provides law enforcement patrols on the county's ATV trails, snowmobile trails, lakes, reservoirs, streams and rivers. These patrols serve to ensure the safety and enjoyment of the public involved in the associated recreational activities.

Specific duties include but are not limited to:

•  Enforcement of all Department of Natural Resources (DNR) codes & laws

•  Investigation of all ATV, Boat and Snowmobile accidents

•  Assist with investigation of crimes involving ATVs, Boats or Snowmobiles

•  Report any safety hazards located on trails or waterways

•  Assist in search & rescue efforts

Safety Programs 

The Marathon County Sheriff's Department is the primary provider of ATV, Boat, Hunter and Snowmobile Safety classes in Marathon County . These classes are provided to youth and adults and assist in accident prevention and help reduce citizen complaints.