 According to 2011 census, Aranthangi had a population of 40,814 with a sex-ratio of 1,030 females for every 1,000 males, much above the national average of 929.A total of 4,340 were under the age of six, constituting 2,203 males and 2,137 females.Scheduled Castes and Scheduled Tribes accounted for 5.75% and 0.76% of the population respectively.