Tamil Nadu is the state with the most districts in Southern India. There are 38 districts in Tamil Nadu. Dindigul is the largest district in terms of area while Chennai is the most populous district. The following is a full list of districts in Tamil Nadu.
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Full list of districts in Tamil Nadu
| District | Area (square kilometers) | Population | |
| 1 | Ariyalur | 1,940 | 7,54,894 |
| 2 | Chengalpattu | 2,944.96 | 25,56,244 |
| 3 | Chennai | 426 (smallest area) | 46,46,732 (largest population) |
| 4 | Coimbatore | 4,723 | 34,58,045 |
| 5 | Cuddalore | 3,703 | 26,05,914 |
| 6 | Dharmapuri | 4,497.77 | 15,06,843 |
| 7 | Dindigul | 6,266.64 (largest area) | 21,59,775 |
| 8 | Erode | 5,722 | 22,51,744 |
| 9 | Kallakurichi | 3,530.58 | 13,77,494 |
| 10 | Kancheepuram (Kanchipuram) | 1655.94 | 11,66,401 |
| 11 | Kanyakumari (Kanniyakumari) | 1,672 | 18,70,374 |
| 12 | Karur | 2,904 | 10,64,493 |
| 13 | Krishnagiri | 5,143 | 18,83,731 |
| 14 | Madurai | 3,710 | 30,38,252 |
| 15 | Mayiladuthurai | 1,169.3 | 9,18,356 |
| 16 | Nagapattinam | 1,940 | 16,16,450 |
| 17 | Namakkal | 3,368.21 | 17,26,601 |
| 18 | Nilgiris | 2,545 | 7,35,394 |
| 19 | Perambalur | 1,757 | 5,65,223 (smallest population) |
| 20 | Pudukkottai | 4,663 | 16,18,345 |
| 21 | Ramanathapuram | 4,068.31 | 13,37,560 |
| 22 | Ranipet | 2,234.32 | 12,10,277 |
| 23 | Salem | 5,245 | 34,82,056 |
| 24 | Sivaganga | 4,189 | 13,39,101 |
| 25 | Tenkasi | 2,882.43 | 33,22,644 |
| 26 | Thanjavur | 3,411 | 24,05,890 |
| 27 | Theni | 3242.3 | 12,45,899 |
| 28 | Thoothukudi | 4,707 | 17,50,176 |
| 29 | Tiruchirappalli | 4,403.83 | 27,22,290 |
| 30 | Tirunelveli | 3,876.06 | 33,22,644 |
| 31 | Tirupathur | 1,831.99 | 12,79,953 |
| 32 | Tiruppur | 5,087.26 | 24,79,052 |
| 33 | Tiruvallur | 3422.43 | 27,21,363 |
| 34 | Tiruvannamalai | 6,188 | 24,64,875 |
| 35 | Tiruvarur | 2,374 | 12,64,277 |
| 36 | Vellore | 6,062.35 | 39,36,331 |
| 37 | Viluppuram | 3,715.33 | 20,85,790 |
| 38 | Virudhunagar | 4,241 | 19,43,309 |
(Also read: What is the total number of districts in India?)
Key points
- Mayiladuthurai district was formed on 28 December 2021 after the bifurcation of the Nagapattinam district.
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- After the States Reorganisation Act of 1956 became effective, Tamil Nadu took its current shape but had 13 districts at the time.
- Kanyakumari is the southernmost district in India.
- One of the Char Dhams, Rameshwaram is located in the Ramanathapuram district.
- The famous hill station Ooty (Udhagamandalam) is located in the Nilgiris district.
- “Mahabalipuram group of monuments” is a UNESCO world heritage site located in Mahabalipuram, a town in the Chengalpattu district.
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