Every year October 10 is observed as National Post Day in India. It is observed to recognize the role played by the Indian Postal Department for more than 150 years. The British brought postal service to India. Lord Dalhousie established it in 1854. It is currently the most commonly used postal system in the world and is run by the Ministry of Communications. India has 9 postal zones, 23 postal circles, and one Army Post Office. India’s post offices use a 6-digit PIN Code system that was implemented there in 1972.
