List of US Post Office Stores in Union, NJ Outlet Note Regular Brands US Post Office New Jersey Union Rating 4.5 based on 76 votes Official Website https://www.usps.com/ Products Postal Service NameAddressPhone Name/Address/Phone US Post Office outlet - Union 1130 W Chestnut St (908) 688-4785 US Post Office outlet - Union 1020 Salem Rd (908) 688-5298 US Post Office outlet - Union 611 Chestnut St (908) 686-2319 US Post Office outlet - Union 1965 Morris Ave, #A (800) 275-8777 People Also Viewed