22 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Orleans | 1 | 357,532 | 383,374 | -1.43% | 2,109 | 170 | City |
| Metairie | 2 | 140,437 | 138,511 | 0.09% | 6,064 | 23 | CDP |
| Kenner | 3 | 64,240 | 66,290 | -0.63% | 4,315 | 15 | City |
| Marrero | 4 | 31,719 | 31,751 | -0.3% | 4,405 | 7 | CDP |
| Terrytown | 5 | 26,802 | 26,044 | 0.88% | 7,315 | 4 | CDP |
| Harvey | 6 | 21,769 | 20,992 | 0.44% | 3,356 | 6 | CDP |
| Estelle | 7 | 17,270 | 17,330 | 0.35% | 3,724 | 5 | CDP |
| Gretna | 8 | 17,040 | 17,762 | -0.84% | 4,222 | 4 | City |
| River Ridge | 9 | 13,329 | 13,690 | -0.08% | 4,767 | 3 | CDP |
| Woodmere | 10 | 11,556 | 10,908 | -0.3% | 3,164 | 4 | CDP |
| Timberlane | 11 | 11,079 | 10,498 | 0.5% | 7,366 | 2 | CDP |
| Waggaman | 12 | 10,879 | 10,917 | 0.54% | 1,898 | 6 | CDP |
| Jefferson | 13 | 9,878 | 10,286 | -0.88% | 3,649 | 3 | CDP |
| Harahan | 14 | 8,749 | 9,098 | -0.79% | 4,335 | 2 | City |
| Westwego | 15 | 8,153 | 8,541 | -0.95% | 2,616 | 3 | City |
| Bridge City | 16 | 6,719 | 6,409 | -0.96% | 1,607 | 4 | CDP |
| Elmwood | 17 | 6,442 | 6,099 | 1.9% | 1,707 | 4 | CDP |
| Avondale | 18 | 4,849 | 4,889 | -0.14% | 873 | 6 | CDP |
| Jean Lafitte | 19 | 1,816 | 1,809 | 0.06% | 310 | 6 | Town |
| Grand Isle | 20 | 987 | 1,005 | -0.4% | 154 | 6 | Town |
| Barataria | 21 | 688 | 1,027 | -3.91% | 161 | 4 | CDP |
| Lafitte | 22 | 454 | 850 | -7.16% | 94 | 5 | CDP |
New Orleans is the largest city in Jefferson Parish, with a population of 357,532.
Lafitte is the smallest city in Jefferson Parish, with a population of 454.
There are 22 cities in Jefferson Parish, Louisiana.