Its headquarters is at Fairley Place (Kolkata) and comprises four divisions: Howrah, Malda, Sealdah, and Asansol.

Eastern Railway oversees the largest and second largest rail complexes in the country, Howrah Junction and Sealdah railway station, and also contains the highest number of A1 and A Category Stations like Howrah, Malda Town, Sealdah, Asansol, Kolkata, Durgapur, Barddhaman, Rampurhat Junction, Bhagalpur,Jamalpur, Jasidih, Bandel and Naihati.

Eastern Railways operates India's oldest train, Kalka Mail.

The East Indian Railway (EIR) Company was incorporated in 1845 to connect eastern India with Delhi.

[5] Presently, it comprises four divisions and they are Malda Town, Howrah, Sealdah and Asansol.