The Marengo County Public Safety Departments are dispatched by the Marengo County E-911 in Demopolis, AL, United States, providing a rapid response by fire, EMS ... See more and law enforcement departments to incidents and control of a wide-range of emergency situations, including broadcast of Marengo County Sheriff's Dept, Linden Police and Fire Dept, Marengo Co. Fire & Rescue Squad, Demopolis Police Dept, Demopolis Fire Dept, and AmStar EMS.