The long-term objective of this study is to quantify biomechanical thresholds for concussion in pediatric populations. Knowledge of the biomechanics associated with pediatric head injury is lacking. The majority of research on the biomechanics of head injury has focused on skull fracture and traumatic brain injury (TBI) in an adult population through the utilization of cadaver and animal experiments. While these studies have advanced the head injury biomechanics field, they offer limited application to a pediatric population. There are size, shape, and developmental changes that occur in the human skull and brain during aging that likely result in biomechanical tolerance differences between humans of varying ages. Efforts to determine biomechanical tolerance thresholds for head injury in pediatric populations have been limited to using inertial scaling laws. Determinations of these thresholds involve no data derived from the representative population for which they were developed for. In this study, the helmets of youth football players, aged 7 to 18 years old, have been instrumented with accelerometer arrays that measure head acceleration each time their helmets are impacted during play. A total of 112 players under the age of 18 years have been instrumented and 31,557 head impacts have been recorded. Of these players, 8 sustained clinically diagnosed concussions. This paper presents a summary of these data as a function of age. Data will be collected for several more years in an effort to compile a comprehensive biomechanical dataset characterizing pediatric concussion. These data will have applications towards pediatric-specific injury metrics, computational modeling, and advanced dummy design.