215 Rice Street
Grand Junction, CO 81501
Grand Junction, CO 81501
The Mesa County Sheriff's Office is the largest Sheriff's Office in Colorado, west of the Continental Divide. The MCSO is responsible for public safety in the 3,300 square miles of Mesa County.
The Sheriff's Office responds to 911 calls, conducts criminal investigations, operates the Mesa County Detention Facility, provides security at the Mesa County Justice Center, search and rescue operations, emergency management, and wildland firefighting.