Riverdale Middle School Location 9822 256th St. N.Port ByronIllinois61275 Next Event Will to Ben - Oct 4 - Oct 10 - All Day Loading Map.... Riverdale Middle School9822 256th St. N. - Port ByronEvents 41.621745 -90.268454 Upcoming Events Will to Ben - Oct 4 - Oct 10 - All Day