Twenty-four-year-old Thomas Edward Grant of Jackson Center, Mercer County, was charged Thursday with aggravated assault, reckless endangerment and simple assault.
The girl, who was hit in the shoulder, arm, back and neck, remained in critical condition from the shooting in rural Rochester, about 30 miles northwest of Pittsburgh.
Police said the girl was playing hide-and-seek behind the Grant family's home Saturday night when she was shot once with a 12-gauge shotgun. She was wearing a black body costume and a black hat with a white feather.
Grant has a preliminary hearing on Nov. 1. It wasn't clear whether he had an attorney.