Union Bank of India is a type of public sector bank of India.
It was formed in the year 1919.
It’s headquarter is located in Mumbai, Maharashtra, India.
The bank had 4196 branches in India as on 31 March 2016 and to add to it 4 overseas branches.

As you have asked about the address of the central office of the Union Bank of India, I am giving you information about it, check below for the details

The headquarters of Union Bank of India is in the prestigious Nariman Point area of Mumbai, a stone's throw from the famous Marine Drive.
It is a 15 storey building at the end of a shady tree lined road going past the Air India building, Express Towers and Mafatlal building.

Union Bank of India, Central Office, Mumbai
Address in detail
Union Bank Bhavan, 239, Vidhan Bhavan Marg,
Nariman Point, Mumbai - 400 021,
Maharashtra, India
Phone number [Board] 022-22892000
Call Centre 24x7
Toll Free 1800 208 2244 ,
Chargeable number 080-25300175,
Others 022-25751500, +91 -22 -25719600