Sagar Island is an island in the Ganges delta, lying on the continental shelf of Bay of Bengal about 100 km (54 nautical miles) south of Kolkata. It belongs to the Republic of India and is governed by the State government of West Bengal. The island is large — with an area of 224.3 km², lying between 21°36’ to 21°56’ north latitude and 88°2’ to 88° 11’ east latitude. It has 43 villages and a population of over 160,000. The largest village is also named "Ganga Sagar" or "Gangasagar".