Greater Cochin Development Authority (GCDA) is the statutory body overseeing the development of the City of Kochi in the state of Kerala, India. Technically, GCDA oversees the development of the major part of Greater Cochin area which consists of the Cochin Corporation, 9 surrounding municipalities (Thrippunithura, Thrikkakara, Aluva, Kalamassery, Maradu, Eloor, North Paravur, Angamaly, and Perumbavoor) and 25 intervening panchayats ((Chellanam, Kumbalanghy, Cheranelloor, Varappuzha, Chennamangalam, Kadamakkudy, Kadungalloor, Alengad, Chengamanad, Nedumbassery, Chottanikkara, Choornikkara, Edathala, Kumbalam, Kottuvally and others) covering an area of 632 km². This has a population of 2,589,038 (2001 census). GCDA is one of the two development authorities in Kochi, the other being GIDA which oversees development in the islands towards west of the Kochi mainland, and north of the harbour, covering a total area of 100 km².