India census, Jammu Cantonment had a population of 30,107. Males constitute 61% of the population and females 39%. Jammu Cantonment has an averageliteracy rate of 74%, higher than the national average of 59.5%: maleliteracy is 80%, and female literacy is 64%. In Jammu Cantonment, 15% of the population is under 6 years of age.