7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mansfield | 1 | 4,459 | 4,717 | -0.96% | 1,221 | 4 | City |
| Stonewall | 2 | 2,682 | 2,210 | 3.03% | 312 | 9 | Town |
| Logansport | 3 | 1,331 | 1,337 | -0.08% | 392 | 3 | Town |
| South Mansfield | 4 | 341 | 337 | 0.29% | 502 | 1 | Village |
| Grand Cane | 5 | 214 | 219 | -0.47% | 189 | 1 | Village |
| Stanley | 6 | 130 | 130 | 0% | 60 | 2 | Village |
| Longstreet | 7 | 121 | 118 | 0.83% | 59 | 2 | Village |
Mansfield is the largest city in De Soto Parish, with a population of 4,459.
Longstreet is the smallest city in De Soto Parish, with a population of 121.
There are 7 cities in De Soto Parish, Louisiana.