Bahrain, officially the Kingdom of Bahrain, is a sovereign state in the Persian Gulf. The island nation comprises a small archipelago centered around Bahrain Island, situated between the Qatar peninsula and the north eastern coast of Saudi Arabia, to which it is connected by the 25-kilometre (16 mi) King Fahd Causeway. According to the most recent 2010 census, Bahrain's population is over 1.2 million, of which around half are non-nationals. At 780 square kilometres (300 sq mi) in size, it is the third-smallest nation in Asia after the Maldives and Singapore. The capital and largest city is Manama.