The teen was standing on the front porch of a home in the 1800 block of North Drake Avenue when he heard gunfire and was shot in his nose, Chicago police said.
Unconfirmed radio traffic indicated the shooter or shooters were on the Bloomingdale Trail.
Paramedics took the boy to Mt. Sinai Hospital in serious condition, police said. A fire department official said his condition was stabilized.
Police said the boy did not see where the shots came from. No arrests have been made.