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|Nickname(s): Ali Ganj|
|• Type||J D U|
|Elevation||77 m (253 ft)|
|• Official||Hindi and Bhojpuri|
|Time zone||IST (UTC+5:30)|
|Lok Sabha constituency||Siwan|
|Vidhan Sabha constituency||Siwan|
Siwan (the old name Aligunj) is located at  It has an average elevation of 77 metres (252 feet)..
As of 2011[update] India census, Siwan had a population of 3,318,176. Males constitute 50.4% of the population and females 49.6%. Siwan has a literacy rate of 72%, higher than the state average of 63.8%: male literacy is 82.8%, and female literacy is 60.4%.
People from Siwan
- Falling Rain Genomics, Inc – Siwan
- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 2004-06-16. Retrieved 2008-11-01.