Punjab is a state in northern India. Forming part of the larger Punjab region of the Indian subcontinent, the state is bordered by the Indian states of Jammu and Kashmir to the north, Himachal Pradesh to the east, Haryana to the south and southeast, Rajasthan to the southwest, and the Pakistani province of Punjab to the west. The state covers an area of 50,362 square kilometers, 1.53% of India's total geographical area. It is the 20th-largest Indian state by area. With 27,704,236 inhabitants at the 2011 census, Punjab is the 16th-largest state by population, comprising 22 districts. Punjabi is the most widely spoken and official language of the state. The main ethnic group is the Punjabis, with Sikhs (58%) forming the demographic majority. The state capital is Chandigarh, a Union Territory and also the capital of the neighboring state of Haryana. The five tributary rivers of the Indus River from which the region took its name are Sutlej, Ravi, Beas, Chenab and Jhelum Rivers; Sutlej, Ravi, and Beas are part of the Indian Punjab.