A stage apparatus includes a movable element including a plurality of magnets, a stage fixed to the movable element, and a stator configured with layers of coils arranged opposite to the magnets with a gap, in which (i) respective layers of coils serve as a plurality of driving axes for driving the movable element in two-dimensional directions, (ii) the stage apparatus generates a driving force in the movable stage by applying power to coils corresponding to respective layers, (iii) a conductive area of a section having a normal coil in a coil winding direction is made so that heat generation amounts of coils corresponding to the respective layers are substantially equal, and (iv) the conductive area of the section having a normal in the coil winding direction in the respective layers of coils is made relatively larger than coils having a smaller driving force constant.