Based on Census data of 2011, the city had a population of 705,579, while the population of Siliguri UA/Metropolitan is 1,057,438. Males constitute 51% of the population and females 49%. In Siliguri, 10% of the population is under six years of age.
Due to the city's booming economy, it has drawn people from Bihar, Jharkhand, North Bengal, North-East, Sikkim and other parts of India in search of livelihood. Siliguri also has a large population of Tibetans and a notable number of Bhutanese permanently settled in the city
It is the 3rd largest city in West Bengal after Kolkata and Howrah and also the 2nd largest city in North East India after Guwahati.
Siliguri, the gateway of North East India, got municipal status in 1949 and grew into Municipal Corporation in 1994. It is one of the most rapidly developing and growing metropolis of the state and also of the country. It is situated in both Darjeeling and Jalpaiguri district.
Some of the oldest sites (British period, since 1880's) in Siliguri are, Hill Cart road, Siliguri Town railway station, Mahabirsthan market.
Siliguri also known for its '4T': Tea, Timber, Tourism and Transport.
A+ category railway station, New Jalpaiguri Junction railway station under Katihar railway division of Northeast Frontier Railway zone serves the city. Two other stations, Siliguri Junction railway station and Siliguri Town railway station, also serve the city.
The New Jalpaiguri Junction railway station, also known as NJP, was opened in 1964 as a greenfield project. The Darjeeling Himalayan Railway Toy Train is the main attraction of this station.
Bagdogra Airport is the airport of Siliguri city.
Education forms an important part of the city.
Government sponsored institutions in Siliguri: premier institutions are, University of North Bengal (1962), a state university and North Bengal Medical College (1968), a state medical college and other institutions are, Siliguri College, Siliguri College of Commerce, Surya Sen Mahavidyalaya, Acharya Prafulla Chandra Roy Government College, Kalipada Ghosh Tarai Mahavidyalaya, Siliguri Government Polytechnic, Siliguri Boys High School etc.
Some private institutions in Siliguri are: North Bengal St. Xavier's College, Siliguri Institute of Technology, Surendra Institute of Engineering & Management etc.