Chaugain is a village and corresponding community development block in Buxar district of Bihar, India.

[2] Chaugain is a rural block, with no large urban centres.

The literacy rate of Chaugain block was 69.43%, including 80.89% among men and 57.27% among women.

[2] Most workers in Chaugain worked in agriculture in 2011, with 29.69% being cultivators who owned or leased their own land and a further 55.02% being agricultural labourers who worked someone else's land for wages.

[2] There are 23 villages in Chaugain block, 20 of which are inhabited and 3 of which are uninhabited.