| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newellton | 1 | 782 | 889 | -2.13% | 1,030 | 1 | Town |
| St. Joseph | 2 | 732 | 827 | -1.88% | 822 | 1 | Town |
| Waterproof | 3 | 478 | 548 | -2.25% | 686 | 1 | Town |
Newellton is the largest city in Tensas Parish, with a population of 782.
Waterproof is the smallest city in Tensas Parish, with a population of 478.
There are 3 cities in Tensas Parish, Louisiana.