A position detector is disclosed, which includes a sensor substrate having a sensor coil for receiving an electromagnetic wave output from a position indicator, and a magnetic path plate that has an area equal to or larger than an area in which the sensor coil is arranged on the sensor substrate. The magnetic path plate is formed by stacking an amorphous layer and a non-amorphous layer, which is formed of metal with relative magnetic permeability lower than that of the amorphous layer. Such magnetic path plate is arranged on a side of the sensor substrate opposite to a side facing the position indicator.