Religion in Bihar Bahá'í community-building activities in four cities from different continents, the fourth of which is Bihar Sharif. Sarnaism has a presence among the tribal populations. 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
Bihar County was established between 1020 and 1050, most probably by Stephen I, the first king of Hungary, or possibly by his successor, Peter. According to a version of a royal charter, issued in 1203, mentioned that "the whole Bihar County" was located partly around Bihar and partly around Zaránd (now Zărand in Romania), suggesting that Bihar County had originally included Zaránd County, or at least its territories north of the river Fehér-Körös. An other version of the same charter also mentioned Békés besides Bihar and Zaránd, implying that Bihar County had also included the lands which developed into the separate Békés