Tamil Nadu PIN Code, Geographic Boundaries, Coordinates & Postal Directory
A comprehensive, verified guide covering the geographic boundaries, land area, latitude/longitude coordinates, postal circle headquarters, and all 2,040 PIN codes in Tamil Nadu.
Quick 30-Second Overview / त्वरित सारांश
Tamil Nadu PIN codes span 60 (Chennai/North), 61 (Cauvery delta), 62 (Madurai/South), 63 (Vellore/Salem), and 64 (Coimbatore/Kongu) across 38 districts with over 12,000 post offices.
1. Geographic Profile / भौगोलिक प्रोफ़ाइल: Area, Coordinates & Boundaries
To understand how mail and logistics flow across Tamil Nadu, we must first look at its geography. Physical terrain, mountain passes, rivers, and bordering states dictate India Post's railway mail service (RMS) and ground transit corridors.
| Geographic Metric | Official Measurement |
|---|---|
| Total Land Area | 130,060 sq km (10th largest in India) |
| Latitude Span | 8°05' N to 13°35' N |
| Longitude Span | 76°15' E to 80°20' E |
| Northern Boundary | Andhra Pradesh and Karnataka |
| Southern Boundary | Indian Ocean (Kanyakumari / Gulf of Mannar) |
| Eastern Boundary | Bay of Bengal (1,076 km coastline) |
| Western Boundary | Kerala (Western Ghats) |
Click to view Tamil Nadu map
Interactive OpenStreetMap with district borders
Key Geographic Features:
- Coromandel coast features the third longest coastline in India at 1,076 km.
- Fertile Cauvery delta forms the historic agricultural breadbasket.
- Western Ghats border the west (Nilgiris, Anaimalai, Palani hills) with major hill stations.
2. Postal Network / डाक नेटवर्क Architecture in Tamil Nadu
Every PIN (Postal Index Number) in Tamil Nadu is structured to optimize automated sorting and daily last-mile dispatch across 11,839 post offices.
3. Major Postal Districts in Tamil Nadu
Below is the breakdown of the most active postal districts in Tamil Nadu, ranked by their assigned PIN codes and delivery coverage:
4. Key PIN Codes & Central Post Offices in Tamil Nadu
These central PIN codes manage the highest mail volume, express parcel sorting, and government document dispatches in Tamil Nadu:
| PIN Code | Primary Post Office | District | Offices Covered |
|---|---|---|---|
| 637411 | Semmedu S.O | NAMAKKAL | 25 |
| 625706 | Pudunagar SO | MADURAI | 23 |
| 630562 | Sivaganga Collectorate SO | SIVAGANGA | 21 |
| 624401 | Natham East SO | DINDIGUL | 21 |
| 635107 | Denkanikotta S.O | KANCHIPURAM | 20 |
| 638701 | Kangayam North SO | TIRUPPUR | 20 |
| 636903 | Harur S.O | DHARMAPURI | 18 |
| 604408 | Vandavasi SO | TIRUVANNAMALAI | 18 |
| 621804 | Udayarpalayam SO Ariyalur | ARIYALUR | 17 |
| 635655 | Matrapalli S.O | VELLORE | 17 |
5. Practical Addressing Tips for Tamil Nadu (Save Time & Money)
Writing an address correctly ensures your Speed Post or parcel reaches the recipient without delay or return to sender. Here are specific rules for Tamil Nadu:
- Chennai GPO (600001) and Anna Salai Head Office handle northern state international mail.
- Coimbatore Head Office (641001) is the commercial sorting anchor for the textile and engineering belt.
- Madurai Head Office (625001) routes southern district dispatches towards Tirunelveli and Kanyakumari.
House/Plot No., Street/Locality Name
Sub-District / Mandal / Tehsil
District, Tamil Nadu – [6-DIGIT PIN CODE]
Editorial Note & Verification Standard
Tamil Nadu's 5 regional PIN prefixes (60, 61, 62, 63, 64) correspond to distinct cultural zones (Chennai, Delta, Pandya, Kongu, Thondai), creating perfect structured navigation.
Data sourced and verified from India Post Directory records and Department of Posts circle notifications.
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