Grove City is a borough in Mercer County, Pennsylvania, approximately 60 miles (97 km) north of Pittsburgh, and 75 miles (121 km) south of Erie. It is the home of Grove City College, a private conservative Christian liberal arts college; General Electric; Instron; USIS; and a number of small businesses. It is also the home to George Junior Republic, an all-boys institution. GJR serves to house, school, and treat 400 high school-aged boys from troubled backgrounds.