| City | 2026 Pop. ↓ |
|---|---|
| Thrissur | 3,940,307 |
| Thiruvananthapuram | 3,556,039 |
| Tiruppur | 2,039,037 |
| Tiruchirappalli | 1,311,095 |
| Thoothukkudi | 871,416 |
| Tirupati | 867,134 |
| Tirunelveli | 612,961 |
| Thanjavur | 457,481 |
| Tumkur | 404,034 |
| Tonk | 222,241 |
| Thanesar | 221,642 |
| Tenali | 183,251 |