As per the official website the contact details have been provided below:

Address :
ELPHINSTONE COLLEGE 156, M.G.Road,
Fort, Mumbai-400 032.

Email : info@elphinstone.ac.in

Tel.: (022) 2284 4060, 2284 3797

For the official website you may visit the link below:

https://www.elphinstone.ac.in/index.php

To know more about the college you may visit the link below:

https://www.careers360.com/colleges/government-of-maharashtras-elphinstone-college-mumbai

I hope this answer helps. All the very best for your future endeavors!