Bikramganj is a nagar parishad city and community development block in Rohtas district, Bihar, India. In the 2011 census, Bikramganj had a population of 48,465 in 7,968 households. The main commodities produced in Bikramganj are rice and pulses. It has a slum known as Dhangai, which had a 2011 population of 3,955 in 637 households. Bikramganj is located at 25.2°N 84.25°E, and has an average elevation of 77 metres (252 feet).