HDFC Bank PATNA PATNA - EXHIBITION ROAD - BIHAR Branch in BIHAR Address & Phone Number can be used for contacting directly, which helps to identify the Exact Location of the Bank. HDFC Bank PATNA - EXHIBITION ROAD - BIHAR Branch PATNA has many branches in BIHAR. Address for HDFC Bank PATNA in BIHAR clearly shows the Address of HDFC Bank. In today's fast world, we need quick banking solutions to suit our lifestyle.