<Tr> <Td> 2011 </Td> <Td> 104,099,452 </Td> <Td> </Td> <Td> 25.4% </Td> </Tr> <Tr> <Td_colspan="4"> Source: Census of India </Td> </Tr> <P> After the 2011 Census, Bihar was the third most populous state of India with total population of 104,099,452 (54,278,157 male and 49,821,295 female). Nearly 89% of Bihar's population lived in rural areas . The density was 1,106 . The sex ratio was 918 females per 1000 males . Almost 58% of Bihar's population was below 25 years age, which is the highest in India . Most of Bihar's population belongs to Indo - Aryan - speaking ethnic groups along with few Dravidian - speaking and Austroasiatic - speaking people mostly in Chhotanagpur Plateau (now part of Jharkhand). It also attracted Punjabi Hindu refugees during the Partition of British India in 1947 . Bihar has a total literacy rate of 63.82% (75.7% for males and 53% for females), recording a growth of 20% in female literacy over the period of a decade . </P> <P> At 11.3%, Bihar has the second lowest urbanisation rate in India . As of the 2011 census, population density surpassed 1,000 per square kilometre, making Bihar India's most densely - populated state, but still lower than West Java or Banten of Indonesia . </P>

According to 2011 census per square kilometre density of population in bihar