Post Offices in Manchester, New Hampshire, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Downtown Post Office No Reviews Favorite Fax: (603) 647-1590Phone: (603) 623-3681Retail Hours Manchester Post Office No Reviews Favorite Fax: (603) 644-4122Phone: (603) 626-6887Retail Hours Manchester South Post Office No Reviews Favorite Fax: (603) 647-1388Phone: (603) 626-0372Retail Hours