Post Offices in Groton, Connecticut, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Borough Post Office No Reviews Favorite Phone: (860) 445-0180Retail Hours Groton Post Office No Reviews Favorite Phone: (860) 445-8154Retail Hours Groton Long Point Post Office No Reviews Favorite Phone: (860) 536-1404Retail Hours Groton Naval Base Post Office No Reviews Favorite Phone: (860) 445-7744Retail Hours Noank Post Office No Reviews Favorite Phone: (860) 536-1433Retail Hours