Authorities say an 11-year-old girl suffered a broken leg when she was hit in the 700 block of Haddon Avenue in Haddonfield at 8:43 p.m. Saturday.
The suspect's car, described as either a 1996 or 1997 Ford Thunderbird or 1996 or 1997 Mercury Cougar, took off.
Investigators say the vehicle is possibly silver or grey and should have damage on the passenger side front corner, including a broken turn signal lens.
The victim remains in stable condition at Cooper University Hospital in Camden.
Anyone with information is asked to contact Haddonfield Police at 856-429-3000.