Knox County Of--emergency Management Agency, After 4pm Mount Vernon, OH 43050 Phone : (740) 397-2727 Business Category Government Offices-County Government Offices & Public Schools Martinsburg Village Of--fire Dept, Knox County Sheriff Mount Vernon, OH 43050 Phone : (740) 397-2727 Business Category Government Offices-City Village & Twp Fire Departments Government Offices State & Local Government Offices & Public Schools Rescue Squads Mount Vernon, OH 43050 Phone : (740) 397-2727 Business Category Ambulance & Rescue Service Rescue Services Local Passenger Transportation Centerburg Police Department Centerburg, OH 43011 Phone : (740) 397-2727 Business Category Police Departments Knox County Sheriff Department 11660 Upper Gilchrist Rd Mount Vernon, OH 43050 Phone : (740) 397-2727 Business Category Fire Departments Fire--fredericktown-knox County Sheriff Mount Vernon, OH 43050 Phone : (740) 397-2727 Business Category Government Offices-County Fire Departments Government Offices & Public Schools