Lockbox systems for securing items in a vehicle. In one embodiment, a hollow rectangular body has an open side which may be closed by a door. One or more L shaped locking members are disposed on the rear of the door adjacent a first longitudinal side. As the door is closed, the members are positioned to reside in locking recesses in a wall of the body, abuttably locking the door at the hinged side. Near a second side of the door, a locking mechanism is disposed that can be actuated to move a locking bolt into a bolt recess to secure the door in the body opening. The rear side surfaces of the door may be beveled to pair against a ridge disposed inside the opening to deter attempts to pry the door open.