Kodungallur is a historically significant town situated on the banks of river Periyar on the Malabar Coast in Thrissur district of Kerala, India. It is …Kodungallur is a historically significant town situated on the banks of river Periyar on the Malabar Coast in Thrissur district of Kerala, India. It is 36 kilometres north of Kochi by National Highway 66 and 38 km from Thrissur. Kodungallur, being a port city at the northern end of the Kerala lagoons, was a strategic entry point for the naval fleets to the extensive Kerala backwaters.