how many railway zones are there in india
Zones and divisions of Indian Railways The 18 zones and the 68 divisions are listed below:[2][3]
Postal Index Number There are nine PIN zones in India, including eight regional zones and one functional zone (for the Indian Army). The first digit of the PIN code indicates the region. The second digit indicates the sub-region, and the third digit indicates the sorting district within the region. The final three digits are assigned to individual post offices.