In terms of area, it is the smallest amongst all the districts of West Bengal but has the highest density of population. It is the only district in the state with cent percent urban population. It has the lowest Scheduled Caste (5.38%) and Scheduled Tribe (0.24%) population in the state. Kolkata district is the only district in the state with a negative growth rate (−1.7%) for the 2001–2011 decade. Kolkata district has the second highest literacy rate (86.3%) in the state.