One object is to provide a new improvement for increasing an effective magnetic permeability of a coil component. A coil component according to one embodiment of the present invention includes a drumcore having a first flange, a second flange, and a winding core coupling said first flange to said second flange, a winding wire wound on the winding core, and an exterior portion provided around thewinding core so as to cover at least part of the winding wire. Said exterior portion has an easy magnetization direction oriented parallel to an axis of the winding core.