Rohtas district is one of the thirty-eight districts of Bihar state, India. It came into existence when Shahabad District was bifurcated into Bhojpur & Rohtas in 1972. The Rohtas district is a part of Patna Division, and it has an area of 3850 km² , a population of 2,448,762 , and a population density of 636 persons per km². The languages spoken in this area are Bhojpuri, Hindi and English.
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