15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Thibodaux | 1 | 15,487 | 15,933 | -0.53% | 2,280 | 7 | City |
| Thibodaux | 2 | 15,487 | 15,897 | -0.53% | 2,280 | 7 | City |
| Raceland | 3 | 11,319 | 10,835 | 0.67% | 525 | 22 | CDP |
| Galliano | 4 | 6,432 | 7,514 | -1.27% | 577 | 11 | CDP |
| Larose | 5 | 5,736 | 6,463 | -1.9% | 528 | 11 | CDP |
| Cut Off | 6 | 5,530 | 5,362 | -0.54% | 378 | 15 | CDP |
| Lockport | 7 | 2,316 | 2,498 | -1.49% | 2,044 | 1 | Town |
| Lockport | 8 | 2,316 | 2,490 | -1.49% | 2,044 | 1 | Town |
| Presquille | 9 | 2,218 | 2,015 | 1.23% | 2,833 | 1 | CDP |
| Golden Meadow | 10 | 1,604 | 1,758 | -1.84% | 655 | 2 | Town |
| Golden Meadow | 11 | 1,604 | 1,753 | -1.84% | 655 | 2 | Town |
| Lockport Heights | 12 | 1,520 | 1,706 | 1.06% | 1,163 | 1 | CDP |
| Bayou Gauche | 13 | 1,332 | 1,703 | -3.62% | 104 | 13 | CDP |
| Mathews | 14 | 1,242 | 1,830 | -4.9% | 312 | 4 | CDP |
| Kraemer | 15 | 1,177 | 1,041 | 1.47% | 224 | 5 | CDP |
Thibodaux is the largest city in Lafourche Parish, with a population of 15,487.
Kraemer is the smallest city in Lafourche Parish, with a population of 1,177.
There are 15 cities in Lafourche Parish, Louisiana.