Post Offices in Clementon, New Jersey, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Clementon Post Office No Reviews Favorite Fax: (856) 435-6094Phone: (856) 435-3728Retail Hours Clementon Carrier Annex Post Office No Reviews Favorite Fax: (856) 783-6053Phone: (856) 783-4868Retail Hours