Palomino Size: Color, Not Breed
It is difficult to give a definitive size for a Palomino because Palomino is a color variation, not a distinct breed. Palominos can appear in many horse breeds, so their size varies widely depending on their breed and individual genetics.
A Palomino Quarter Horse will be smaller than a Palomino Thoroughbred. To provide a more accurate answer, you would need to know the specific breed and whether you are asking about height, weight, or another measurement.