Pin code System In India

First Digit—Region— States Covered

1 —  Northern – Delhi, Haryana, Punjab, Himachal Pradesh and Jammu & Kashmir
2 —  Northern – Uttar Pradesh and Uttaranchal
3 —  Western – Rajasthan and Gujarat
4 —  Western – Maharashtra, Madhya Pradesh and Chattisgarh
5 —  Southern – Andhra Pradesh and Karnataka
6 —  Southern – Kerala and Tamil Nadu
7 —  Eastern – West Bengal, Orissa and North Eastern
8 — Eastern – Bihar and Jharkand
9 — APS – Army Postal Service