Most of the research & teaching activities of the Institute take place in its headquarters in Kolkata and the four centres. In Kolkata, Delhi, Bengaluru and Hyderabad, the Institute has its own campus and they are equipped with adequate hostel facility for students, residential quarters for the faculty and guest houses, and also recreational and medical facilities. The campus at Giridih has a small guest house and rudimentary hostel facilities. The relatively new centres at Chennai and Tezpur are still operating at temporary locations. However, at these centres too, the Institute is providing hostel facility for students and residential facility for faculty members. At each of these five locations, there are a large number of scientists in Theoretical & Applied Statistics, Mathematics and Economics. In Kolkata, Chennai and Bengaluru, there is also a large group of scientists in Computer & Communication Sciences, Statistical Quality Control & Operations Research and other branches of natural and social sciences.