As of the 2011 India census,[2] Simga had a population of 16,027. Males constitute 50% of the population and females 50%. Simga has an average literacy rate of 78.53%, higher than the national average of 70.28%: male literacy is 87.77%, and female literacy is 69.41%. In Simga, 15.16% of the population is under 6 years of age.