Cherthala (formerly Shertallai or Shertallay) is a town located in the district of Alappuzha, in the state of Kerala, India. It is located 30 km (19 mi) south of the city of Kochi and 22 km north of Alappuzha town, on the Kochi-Alappuzha National Highway NH 47, as well as the coastal rail route.In local administration, the Cherthala town is a municipality while in the state administrative structure Cherthala is a taluk in the district of Alappuzha.