The last census in Pakistan was held in 1998. The government has conducted another census in 2017 to calculate the availability of resources and their distribution according to the current population. This is important because relying on data from the previous census can be problematic: the current allocation of resources does not take into account the increase in population.
Moreover, for a city like Karachi, the migration of refugees is also unaccounted for. The people who move into the metropolis are registered as residents of places from where they migrate. This increases the burden on Karachi’s meagre resources. The census should be conducted after every two years so that the government is in a better position to chalk out the distribution of resources.