Bihar has 38 districts as per the latest administrative reorganization. This was increased from 36 after the creation of new districts in recent years.

The Ganga is the longest river flowing through Bihar with a length of approximately 420 km within the state.

Nalanda University was an ancient Buddhist university located in Nalanda district. It was one of the world's oldest universities.

According to the 2011 Census, Bihar has the lowest literacy rate among Indian states at 53.87%, with male literacy at 66.40% and female literacy at 39.95%.

Bodh Gaya is located in Gaya district of Bihar. It is believed to be the place where Gautama Buddha attained enlightenment.

Pataliputra was the capital of the Mauryan Empire and was associated with all major Mauryan emperors including Chandragupta Maurya, Bindusara, and Ashoka.

The Kosi River originates from the Himalayas in Nepal and is known for causing devastating floods in Bihar. It is called 'Sorrow of Bihar' due to its destructive nature.

Bihar has several wildlife sanctuaries including Valmiki National Park in West Champaran, Rajgir Wildlife Sanctuary in Nalanda, and Bhimbandh Wildlife Sanctuary in Munger.

Bihar was separated from Bengal and established as a separate administrative unit in 1912. In 2000, Jharkhand was carved out from Bihar.

Bihar covers an area of 94,163 square kilometers, making it one of the smaller states by area in India.