Find Postal Index Number(PIN) codes of India, Click any Town/Taluk below of District TIRUVALLUR ,State TAMIL NADU
| # | Town/Taluk | Post Offices |
| 1 | AMBATTUR | 46 |
| 2 | AVADI | 1 |
| 3 | CHENNAI CORPORATION | 1 |
| 4 | GUMMIDIPOONDI | 4 |
| 5 | GUMMIDIPUNDI | 20 |
| 6 | GUMMIDIPUNDII | 1 |
| 7 | GUMMIDPUNDI | 1 |
| 8 | PALLIPAT | 18 |
| 9 | PALLIPATTU | 5 |
| 10 | PONNERI | 56 |
| 11 | POONAMALEE | 2 |
| 12 | POONAMALLEE | 41 |
| 13 | SRIPERUMBUDUR | 2 |
| 14 | THIRUVALLUR | 9 |
| 15 | TIRUTANI | 22 |
| 16 | TIRUTTANI | 38 |
| 17 | TIRUVALLUR | 112 |
| 18 | TIURVALLUR | 1 |
| 19 | TRUTANI | 1 |
| 20 | UTHUKKOTTAI | 1 |
| 21 | UTTUKOTTAI | 12 |
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The postal system in India was Formed in 1 October 1854 under India Jurisdiction.Headquarters : Dak Bhawan, Sansad Marg, New Delhi
The Postal Index Number (PIN, or sometimes redundantly PIN code) is a six-digit postal code introduced on 15 August 1972. There are total of 19,101 PINs covering 154,725 post offices in India,
The PIN system is organised in the following way:
-The first digit indicates the zone.
-The first two digits indicate the sub-zone (or postal circle).
-The first three digits indicate a sorting district.
-The last three digits indicate the delivery post office.