3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newellton | 1 | 797 | 890 | -1.85% | 1,050 | 1 | Town |
| St. Joseph | 2 | 754 | 826 | -1.57% | 847 | 1 | Town |
| Waterproof | 3 | 489 | 549 | -2% | 702 | 1 | Town |
Newellton is the largest city in Tensas Parish, with a population of 797.
Waterproof is the smallest city in Tensas Parish, with a population of 489.
There are 3 cities in Tensas Parish, Louisiana.