Post Offices in Princeton, New Jersey, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Palmer Square New Post Office No Reviews Favorite Fax: (609) 430-1175Phone: (609) 921-9563Retail Hours Princeton Post Office No Reviews Favorite Fax: (609) 452-1853Phone: (609) 452-9044Retail Hours