Govt calls for implementation of residential postcode system 03 Govt calls for implementation of residential postcode system Ministry of Works, Transport and Communication Permanent Secretary Dr Zainab Chaula has called upon local government leaders to properly supervise implementation of the national postcode system for residential address currently executed at different regions across the country. Dr Chaula made the directive in Mwanza during her meeting with 175 leaders from local government authority and ward executive officers from Ilemela and Nyamagana districts. She said the leaders are responsible for ensuring successful implementation of the project which will see houses placed with identification numbers. The PS added that the government has started to implement the national postcode address in twelve districts. She said that Mwanza city has been earmarked as a pilot where two districts—Ilemela and Nyamagana will be given priority.