List of US Post Office Stores in Belmont, MA Outlet Note Regular Brands US Post Office Massachusetts Belmont Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Belmont 297 Belmont St (781) 484-7007 US Post Office outlet - Belmont 405 Concord Ave (617) 484-4201 US Post Office outlet - Belmont 492 Trapelo Rd (617) 484-4724 People Also Viewed