6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| St. Gabriel | 1 | 7,062 | 6,446 | 1.48% | 238 | 30 | City |
| Plaquemine | 2 | 5,866 | 6,223 | -1% | 2,007 | 3 | City |
| White Castle | 3 | 1,562 | 1,712 | -1.58% | 2,131 | 1 | Town |
| Maringouin | 4 | 792 | 879 | -1.74% | 1,073 | 1 | Town |
| Rosedale | 5 | 636 | 654 | -0.47% | 82 | 8 | Village |
| Grosse Tete | 6 | 532 | 550 | -0.56% | 363 | 1 | Village |
St. Gabriel is the largest city in Iberville Parish, with a population of 7,062.
Grosse Tete is the smallest city in Iberville Parish, with a population of 532.
There are 6 cities in Iberville Parish, Louisiana.