West Bengal (/wɛst bɛŋˈɡɔːl/) is an Indian state, located in Eastern India on the Bay of Bengal. With over 91 million inhabitants (as of 2011), it is India's fourth-most populous state. It has an area of 88,752 km (34,267 sq mi). A part of the ethno-linguistic Bengal region, it borders Bangladesh in the east, and Nepal and Bhutan in the north. It also borders the Indian states of Odisha, Jharkhand, Bihar, Sikkim, and Assam. The state capital is Kolkata (Calcutta), the seventh-largest city in India. As for geography, West Bengal includes the Darjeeling Himalayan hill region, the Ganges delta, the Rarh region, and the coastal Sundarbans. The main ethnic group are the Bengalis, with Bengali Hindus forming the demographic majority.