Today IRI has eight branches. They are located at Kolkata, Chennai, Delhi, Gujarat (Vadodara), Karnataka (Mysore), Kerala (Perembra), Mumbai and Rajasthan (Kankroli), with the headquarters in Kolkata.
With a total membership exceeding 3000, these branches cover the regions indicated below :
It is proposed to revive the sub branches at Hyderabad and Madurai as significant rubber industry development has taken place in these areas.