Chamtha is a village in the state of Bihar, India.

[1] Chamtha is situated on the north bank of the Ganges River, with the National Highway 122B passing through its north.

The village covers an area of 1935 hectares.

[2] According to the 2011 Census of India, Chamtha had a total population of 32,434, of which 17,129 were males and 15,305 were females.

The average literacy rate stood at 41%, with 8,169 of the male residents and 5,128 of the female residents being literate.