How pincodes in india

PIN Codes in India

Postal Index Number (PIN) is a 6 digit code. There are 8 PIN regions in the country. The first digit indicates one of the regions. The first 2 digits together indicate the sub region or one of the postal circles. The first 3 digits together indicate a sorting/revenue district. The last 3 digits refer to the delivery Post Office.

The first digit of PIN indicates the following:

Regions indicated by first digit of PIN
First Digit Region States Covered
1 Northern Delhi, Haryana, Punjab, Himachal Pradesh, Jammu & Kashmir
2 Northern Uttar Pradesh and Uttarakhand>
3 Western Rajasthan and Gujarat
4 Western Chhattisgarh, Maharashtra and Madhya Pradesh
5 Southern Andhra Pradesh and Karnataka
6 Southern Kerala and Tamil Nadu
7 Eastern West Bengal, Orissa and North Eastern
8 Eastern Bihar & Jharkand

The first 2 digits of PIN indicates the following:

Sub regions indicated by first 2 digits of PIN
First 2 Digits of PIN Circle
11 Delhi
12 and 13 Haryana
14 to 16 Punjab
17 Himachal Pradesh
18 to 19 Jammu & Kashmir
20 to 28 Uttar Pradesh
30 to 34 Rajasthan
36 to 39 Gujarat
40 to 44 Maharashtra
45 to 49 Madhya Pradesh & Chhatisgarh
50 to 53 Andhra Pradesh
56 to 59 Karnataka
60 to 64 Tamil Nadu
67 to 69 Kerala
70 to 74 West Bengal
75 to 77 Orissa
78 Assam
79 North Eastern
80 to 85 Bihar & Jharkhand
reference http://india.gov.in/pincodes.php