St. John's University (also known as SJU or STJ) is a private, Roman Catholic, coeducational university located in New York City, United States. Founded by the Congregation of the Mission (C.M. , the Vincentian Fathers) in 1870, the school was originally located in the borough of Brooklyn in the neighborhood of Bedford–Stuyvesant. Beginning in the 1950s, the school was relocated to its current location in the borough of Queens. St.