List of US Post Office Stores in Chappaqua, NY Outlet Note Regular Brands US Post Office New York Chappaqua Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Chappaqua 107 N Greeley Ave (914) 238-7592 People Also Viewed