A coin hopper includes a coin-dispensing unit including a hopper defining a coin outlet, a rotating disk, a power drive, a sensor module and a circuit module for dispensing coins having different thicknesses, and a coin-delivering presser mounted in the hopper and including an elastic member and a float rotatably supported on the elastic member for pressing on one thick coin or thin coin in the rotating disk, enabling the coins to be individually and smoothly delivered to the coin outlet for dispensing and avoiding a coin stuck problem.