List of US Post Office Stores in Union City, NJ Outlet Note Regular Brands US Post Office New Jersey Union City 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 City 301 30th St (800) 275-8777 US Post Office outlet - Union City 2100 Bergenline Ave (201) 617-5288 US Post Office outlet - Union City 720 8th St (800) 275-8777 People Also Viewed