Forest Hill is a neighborhood in the city of Newark in Essex County, in the U.S. state of New Jersey. It is a pre-World War II neighborhood in the North Ward. It is bounded on the west by Branch Brook Park, on the south by Bloomfield Avenue, and on the east by both Summer and Mt. Prospect Avenues, the neighborhood of Broadway. The neighborhood's ZIP Code is 07104. Forest Hill is located on a ridge between the Passaic River and the valley of the Branch Brook.