The city and notified area of Dalsinghsarai lies in the Samastipur district in the state of Bihar in India. The 2001 census of India records that the city is populated by 20,181 people, out of which 53% are males, 47% are females and 16% are children less than 6 years of age. The average literacy rate of 60%, is inclusive of 69% male literacy and 51% female literacy. This becomes higher than the nationwide standard of 59.5%.