According to the 2011 Indian census, the population of Mangalore city was 484,785,[3] and the metropolitan area had a population of 619,664.[4] The male literacy rate was 96.49 per cent and the female literacy rate was 91.63 per cent.[4] About 8.5 per cent of the population was under the age of six years.[4] The death rate and Infant mortality rate were at 3.7 per cent and 1.2 per cent respectively.[135] About 7726 people resided in slums in Mangalore city, which was 1.55 per cent of the total population.[136][137] The Human Development Index (HDI) of Mangalore city was 0.83 in 2015[update].[7]