A hanger assembly for hanging objects from a post is disclosed having a pole having an upper end section configured to support an object, and a lower end section configured to extend through a hollow shaft of the post. The hanger assembly comprises an upper stabilization device having a pole receiving aperture for coupling to the pole, and at least one post support member interfaceable to a top portion of the post to support the pole. The hanger assembly includes a lower stabilization device having a pole attachment portion for coupling to the lower end section of the pole. The lower stabilization device can have a vertical profile or outer planar surface adapted to interface an inner surface of the post to laterally stabilize the lower end section of the pole to restrict lateral movement of the lower stabilization device and the pole. Associated fence systems and methods for installing the hanger assembly are disclosed.