It happened around 5 p.m. on the 1300 block of West Bristol Street in the city's Hunting Park neighborhood.
Authorities say a detective with the Philadelphia Police Department witnessed the collision and called police.
The young girl was then taken to Saint Christopher's Hospital in stable condition.
Officers say the car remained on the scene after the crash. It is unclear whether charges will be filed.
Anyone with information on this incident is asked to contact the police.