The Reserve Unit works hand-in-hand with the patrol division, but does not have direct police powers. They are called upon to provide a police presence during large events. This unit also provides security at many functions throughout Allegan County. The members of the Reserve Unit participate in a Training Academy every other year. All new recruits are required to complete this academy before being placed into service.
The Reserve Unit is comprised of forty-three (43) part-time/volunteer deputies. In January, 2014, the Mounted Unit was restructured and became part of the Reserve Unit, with seven (7) members transferring into the Reserve Unit.
This Unit also performs property checks for residents of Allegan County during long-term absences from their homes.