Thalassery is a city and municipality on the Malabar Coast in Kannur district in the state of Kerala, India, bordered by the districts of Mahe and Kozhikode. Thalassery municipality has a population of just under 100,000 as of 2011 census. Thalassery Heritage City has an area of 23.98 square kilometres (9.26 sq mi). Thalassery has an altitude ranging from 2.5 to 30 metres above mean sea-level. It is located 25 km from Vadakara, 15 km from Mahé and 22 km from Kannur.