[27]  making it the second largest  metropolitan area  in India after Mumbai . [28] There are 925 women per 1000 men in NCT, and the  literacy rate  is 81.67%. [29] Hinduism  is the religion of 86.8% of New Delhi's population.  There are also large communities of  Muslims  (6.3%),  Sikhs  (2.4%),  Jains  (1.1%)