Religion in Bihar Religion in Bihar The main religions in the Indian state of Bihar are Hinduism (practiced by 82.7% of the population) and Islam (16.9%). Other religions are practiced by small minorities. Places in Bihar have important historical and cultural associations with Buddhism, Sikhism and Jainism along with Hinduism. Since Bihar was a part of Aryavart the oldest religion of Bihar was Vedic Hinduism. The majority of the people in Bihar adhere to Hinduism (82.7%), followed by Islam (16.9%). Hindu Pilgrimage sites in Bihar are as follows: Hinduism is the main religion of the state, being practiced by 82.7% of the total
Indian people Hindus 37%. It is to be noted that while participants in the Indian census may choose to not declare their religion, there is no mechanism for a person to indicate that he/she does not adhere to any religion. Due to this limitation in the Indian census process, the data for persons not affiliated with any religion may not be accurate. India contains the majority of the world's Hindus, Jains, Sikhs, Zoroastrians and Bahá'í. Christianity is widespread in the Northeast India, parts of southern India, particularly in Kerala and among various populations of Central India. Muslims are the largest religious minority.