Ahmedabad, also spelt Amdavad, is the most populous city in the Indian state of Gujarat. It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court. Ahmedabad's population of 5,570,585 makes it the fifth-most populous city in India, and the encompassing urban agglomeration population estimated at 8,854,444 is the seventh-most populous in India. Ahmedabad is located near the banks of the Sabarmati River, 25 km (16 mi) from the capital of Gujarat, Gandhinagar, also known as its twin city.