| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Greensburg | 1 | 612 | 632 | -0.49% | 243 | 3 | Town |
Greensburg is the largest city in St. Helena Parish, with a population of 612.
Greensburg is the smallest city in St. Helena Parish, with a population of 612.
There is 1 city in St. Helena Parish, Louisiana.