The men and women in the Patrol Division are the first responders to all types of calls for service. Patrol deputies respond to accidents and crimes in progress, as well as enforce traffic laws, take criminal reports, and conduct initial criminal investigations. Although the Investigation Division is generally responsible for conducting follow-up investigations, it is not unusual for patrol deputies to take a complaint and conduct an initial criminal investigation.

The Patrol Division operates 24 hours a day, 365 days of the year. The division is divided into three shifts per day; each shift is supported by two to three deputies.

To become a deputy in the Patrol Division, applicants must pass written and physical fitness tests before they are hired. New deputies must complete the Basic Law Enforcement Training Course and successfully complete a field training program. After completing the field training program, probationary deputies are assigned to a shift and are expected to perform the same duties as their veteran counterparts. New deputies must serve a period of probation for one year from the date they are hired.

Every member of the Patrol Division is encouraged to acquire advanced training in matters related to their specific duties. Many of these deputies receive additional training which qualifies them to perform specialized duties such as Radar and LIDAR Operators, Juvenile Officers, Crisis Intervention Officers, and Field Training Officers.