The Mauryan Empire was divided into four provinces with their capitals at Taxila, Ujjain, Suvarnagiri and Kalinga. The provincial governors were mostly appointed from the members of royal family. They were responsible the maintenance of law and order and collection of taxes for the empire.
The district administration was under the charge of Rajukas, whose position and functions are similar to modern collectors. He was assisted by Yuktas or subordinate officials.
Village administration was in the hands of Gramani and his official superior was called Gopa who was in charge of ten or fifteen villages.
Urban administration was handled by a nagarika.
Both Kautilya and Megasthanes provided the system of Municipal administration. Arthasastra contains a full chapter on the role of Nagarika or city superintendent. His chief duty was to maintain law and order.
Megasthenes refers to the six committees of five members each to look after the administration of Pataliputra. These committees looked after: 1. Industries 2. Foreigners 3. Registration of birth and deaths 4. Trade 5. Manufacture and sale of goods 6. Collection of sales tax.