<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> 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>
according to 2011 census per square kilometre density of population in bihar
according to 2011 census per square kilometre density of population in bihar
1,106
1,106