|Native to||India, Nepal, Bangladesh|
|Region||Bihar, West Bengal|
|2,256,228 (2011 census)|
Census results conflate some speakers with Hindi.
Surjapuri, a language possessing similarities with Kamatapuri, Assamese, Bengali and Maithili, is mainly spoken in the parts of Purnia division (Kishanganj, Katihar, Purnia, Araria districts) of Mithila region of Bihar. Apart from Bihar, it is also spoken in West Bengal (Uttar Dinajpur and Dakshin Dinajpur districts, and in Siliguri city of Darjeeling district – part of the North Bengal region within Jalpaiguri division), as well as in parts of eastern Nepal. It is one of the lesser known Bihari languages spoken in Eastern India comprising today's northern West Bengal and Eastern Bihar. It is associated with Kamtapuri language (and its dialects Rangpuri and Koch Rajbangshi) spoken in North Bengal and Western Assam.
- "Statement 1: Abstract of speakers' strength of languages and mother tongues - 2011". www.censusindia.gov.in. Office of the Registrar General & Census Commissioner, India. Retrieved 2018-07-07.
- "Statement 1: Abstract of speakers' strength of languages and mother tongues – 2001". Office of the Registrar General & Census Commissioner, India. Retrieved 30 May 2017.
- Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2017). "Surjapuri". Glottolog 3.0. Jena, Germany: Max Planck Institute for the Science of Human History.
- "Small States Syndrome in India". p. 146. Retrieved 16 February 2017.
- Hernández-Campoy, Juan Manuel; Conde-Silvestre, Juan Camilo, eds. (15 February 2012). The Handbook of Historical Sociolinguistics. John Wiley & Sons. ISBN 9781118257265. Retrieved 5 March 2018.
- Free repository of illustrated children's stories in Surjapuri translated by Azad India Foundation and sponsored by Pratham Books
- "Word Formation in Surjapuri" (PDF).
- "Case and Case-like Postposition in Surjapuri" (PDF).
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