Postal Index Number – PIN Code
A Postal Index Number (PIN) is a unique code given to every post office in the Indian Post System. The Indian Post is the largest postal service in the world. There are more than 1.5 lakh post offices in India. The PIN is a six digits code assigned to every post office as per areas designated.
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When did the PIN code system start?
- The PIN code system was introduced on 15 August 1972.
- Introduced by Shriram Bhikaji Velankar, an additional secretary in the Union Ministry of Communications.
- To simplify the manual sorting and delivery of mail by eliminating confusion over incorrect addresses, similar place names, and different languages used by the public.
How is the Indian Postal Service structured?
There are nine postal zones in India, including eight regional zones and one functional zone (for the Indian Army). All these zones contain 23 postal circles.
- The first digit of the PIN indicates the postal zone.
- The second indicates the sub-zone.
- The third, combined with the first two, indicates the sorting district within that zone.
- Sorting district is the headquarter of the area and it is the largest post office of the area.
- The fourth digit indicates the service route. (Sorting district office to the destination office)
- The final two digits are assigned to individual post offices within the sorting district.
Himachal Pradesh (HP)
Jammu and Kashmir (JK)
Uttar Pradesh (UP)
0 to 8
0 to 4
6 to 9
Daman and Diu (DD)
Dadra and Nagar Haveli (DN)
0 to 4
Madhya Pradesh (MP)
5 to 8
Andhra Pradesh (AP)
1 to 3
6 to 9
Tamil Nadu (TN)
0 to 6
7 to 9
West Bengal (WB)
0 to 4
Andaman and NicobarIslands (AN)
Arunachal Pradesh (AR)
0 to 5
Army Post Office (APO)
0 to 9
Field Post Office (FPO)
What are the types of Post offices in India?
- The last two digits represent the delivery office within the sorting district starting from 01.
- General Post Office (GPO) or head office (HO) is generally assigned 01 as the last two digits.
- Other post offices, as well as the new post offices, are assigned the next available PIN codes.
Types of Post offices
- Urban Areas
- Head Post Office (HO) or General Post Office (GPO)
- Sub Post Office (SO)
- Rural Areas
- Branch Post Office (BO)
- The first digit (3) indicates zone 3
- The second digit (7) indicates the Rajkot region of Gujrat state.
- Third digit (0) indicates Kutch Sorting district (Bhuj Head Office – 370 001)
- The last three digits indicate the Vayor branch office.