Sealdah station is considered one of the most significant railway stations after Howrah Station, that serves the city Kolkata (Calcutta) in India. It is also regarded the busiest railway station in India. The Sealdah division of railways was formed in 1952 after due reorganisation of railways. The original station was designed by Mr. Walter Glanville.

Sealdah station is famous mainly as a suburban local train terminal. Sealdah station has 2 sections namely Sealdah Main and Sealdah South. These two sections are completely separate from each other. Local trains run from the southern section between the stations Kolkata, Diamond Harbour, Budgebudge, Canning, and Lakshmikantapur. The main section of Sealdah station operates trains between Kolkata and Barrackpore, Naihati, Kalyani, Krishnanagar, Ranaghat, and others.

The Bongaon division of Sealdah operates trains for Birati, Madhyamgram, Hridaypur, Barasat, Duttapukur, Habra, Gobardanga, Bongaon, and others. The main division also handles long distance trains connecting whole India, especially to eastern India. Sealdah Station apart from local trains, also offers the long distance passengers a frequent network of rail services. Hill stations like Darjeeling can be reached by the Darjeeling Mail that caters to the passengers of Sealdah Station. Sealdah station has been upgraded to such an extent that many long distance trains like Sealdah Rajdhani Express chose to start its jouney from the station.

The main section of the Sealdah station comprises some sub sections like, Barasat Section, Dankuni Section, Naihati Section. All these sections are bifurcated from the Dum Dum Station. The Barasat Section has two sub sections namely Bongaon line and Hasnabad line. The Naihati Section splits into two sections namely, Bandel section and Gede section. The Sealdah South Section has sub sections like, Budge Budge Section, Canning Line, Baruipur Section, Diamond Harbour line, Kakdwip Line.

Sealdah station provides healthy railway services to the residents of Kolkata as well as to the travellers. Millions of passengers every day experience services of Sealdah to reach their respective destinations. It can easily be considered a gateway to the other parts of West Bengal. Sealdah station like other railway junctions, play a significant part in connecting the other regions of India.