Episcopal Diocese of New Jersey

The Episcopal Diocese of New Jersey forms part of Province II of the Episcopal Church in the United States of America. It is made up of the southern and central New Jersey counties of Union, Middlesex, Somerset, Hunterdon, Mercer, Monmouth, Ocean, Burlington, Camden, Atlantic, Gloucester, Salem, Cumberland, and Cape May. It is the second oldest of the nine original Dioceses of the Episcopal Church. Activities in the diocese began in 1685 with services at St. Peter's parish in Perth Amboy. The diocese itself was founded in 1785.

The diocese originally included all of the state of New Jersey, but was divided in 1874, when the northern third of the state split off to form the Diocese of Northern New Jersey, which was later renamed to become the Diocese of Newark. The Diocese of New Jersey has the sixth-largest number of parishes in the Episcopal Church, and the eighth-largest number of baptized communicants. It has a reputation for broad ethnic and socio-economic diversity.

The Diocese of New Jersey currently has a total of 134 congregations. The diocese is under the jurisdiction of Bishop Sally French whose seat is at Trinity Cathedral in Trenton. The largest parish in the diocese is Trinity Church, Princeton.

The diocese reported 41,114 members in 2015 and 30,423 members in 2023; no membership statistics were reported in 2024 parochial reports. Plate and pledge income for the 134 filing congregations of the diocese in 2024 was $20,113,569; average Sunday attendance (ASA) was 7,529 persons.