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|Elevation||89 m (292 ft)|
|Time zone||IST (UTC+5:30)|
|Sex ratio||1.07 ♂/♀|
The name of the town came from the market of Shessham trees which came from the rivers in Nepal. Hence, its original name was "Shesshamwa ke bazar", but over the years, it became known as Siswa Bazar.
Near the Nepal and Bihar border, Siswa Bazar is located at  It has an average elevation of 89 metres (295 feet)..
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