Post Offices in Massapequa, New York, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Massapequa Post Office No Reviews Favorite Fax: (516) 799-9218Phone: (516) 798-2576Retail Hours North Massapequa Post Office No Reviews Favorite Fax: (516) 797-8707Phone: (516) 798-2450Retail Hours