10 cities
| City | Parish | 2026 Pop. ↓ |
|---|---|---|
| Terrytown | Jefferson Parish | 26,427 |
| Thibodaux | Lafourche Parish | 15,405 |
| Timberlane | Jefferson Parish | 11,383 |
| Tallulah | Madison Parish | 5,390 |
| Tickfaw | Tangipahoa Parish | 692 |
| Tangipahoa | Tangipahoa Parish | 461 |
| Turkey Creek | Evangeline Parish | 398 |
| Tullos | LaSalle Parish | 298 |
| Taft | St. Charles Parish | 124 |
| Triumph | Plaquemines Parish | 71 |