A display control apparatus assigning display images to multiple areas of a vehicle-mounted display is disclosed. The display control apparatus stores area relationship information for each of the areas and image relationship information for each of the display images. Of two display images related to each other, the display control apparatus determines that one display image belongs to a first image group and the other display image belongs to a second image group. The display control apparatus assigns the one display image to the areas by performing a predetermined comparison operation, and then assigns the other display image to the areas based on the area assigned the one display image and the area relationship information.