As per the 2011 Census, Bihar is the third most populous state of India with a population of 104,099,452 (54,278,157 male and 49,821,295 female).
Mostly, the population of Bihar is classified according to religion, social caste and lineage, and language, rather than by specific ethnic affiliation.
According to the 2011 census, 82.7 percent of Bihar's population practiced Hinduism, while 16.9 percent followed Islam.
The sex ratio of Bihar was 918 females per 1000 males.
The literacy rate of Bihar 63.82 percent (75.7 percent for males and 53 percent for females).
More than 58 percent of the people from Bihar are below the age of 25 reasons behind the high population.