Post Offices in Darien, Connecticut, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Darien Post Office No Reviews Favorite Fax: (203) 655-0863Phone: (203) 655-2595Retail Hours Noroton Heights Post Office No Reviews Favorite Phone: (203) 655-0631Retail Hours