Sheriff's police say 16-year-old Sara Fitzpatrick of Hinkley was pronounced dead on the scene of an accident on McGirr Road.
Fitzpatrick was a passenger in a car driven by 17-year-old Adam Latham of Maple Park.
Police say Latham left the roadway and struck a utility pole. He was airlifted to St. Anthonys Medical Center where he's in serious condition.
Police have charged Latham with disobeying a stop sign.