 It became part of the princely state of Pudukkottai under British rule.As of the 2011 Indian census, The Arimalam city is divided into 15 wards for which elections are held every 5 years.The Arimalam Town Panchayat has population of 19,948 of which 10,552 are males while 9,448 are females as per report released by Census India 2015.