According to 2011 census, Ramanathapuram had a population of 61,440 with a sex-ratio of 988 females for every 1,000 males, much above the national average of 929. A total of 6,370 were under the age of six, constituting 3,245 males and 3,125 females. Scheduled Castes and Scheduled Tribes accounted for 4.89% and .8% of the population respectively. The average literacy of the town was 83.42%, compared to the national average of 72.99%. The town had a total of 14716 households. There were a total of 20,375 workers, comprising 115 cultivators, 178 main agricultural labourers, 262 in house hold industries, 18,773 other workers, 1,047 marginal workers, 20 marginal cultivators, 30 marginal agricultural labourers, 41 marginal workers in household industries and 956 other marginal workers.