Brahmpur is a sizable hamlet in the Bihar district of Buxar, along with a matching community development block. It is well-known for its livestock fair, religious rituals, and Shiva temple. People travel to Brahmapur to carry out religious rites at the Shiva temple.

In 2011, there were 17,057 people living in 2,554 homes in Brahmapur, and 196,070 people living in 28,826 households throughout the block.