The interior component of the invention has a core material and a skin material arranged to cover a surface of the core material. The core material is provided with a top plate, an outer wall portion having a round shape at a corner portion, and a plurality of drop-off prevention ribs arranged adjacent to the outer wall portion. A resin band is mounted to an inner surface of a peripheral edge portion of the skin material. The resin band and the peripheral portion of the skin material are fitted and fixed to the outer wall portion of the core material by using reaction force generated when the resin band is elastically folded into the corner portion.