Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bayou Blue | 1 | 11,503 | 13,997 | -0.52% | 494 | 23.3 | CDP |
| Chackbay | 2 | 5,718 | 5,108 | 0.67% | 206 | 27.7 | CDP |
| Lafourche Crossing | 3 | 2,404 | 1,982 | 1.18% | 571 | 4.2 | CDP |
| Pierre Part | 4 | 2,327 | 1,815 | -2.51% | 757 | 3.1 | CDP |
| Belle Rose | 5 | 2,051 | 2,052 | 0.49% | 382 | 5.4 | CDP |
| Bayou L'Ourse | 6 | 2,049 | 2,231 | 0.24% | 752 | 2.7 | CDP |
| Labadieville | 7 | 1,495 | 1,302 | -1.65% | 384 | 3.9 | CDP |
| Paincourtville | 8 | 1,399 | 1,446 | 2.57% | 804 | 1.7 | CDP |
| Bayou Country Club | 9 | 1,250 | 1,363 | -0.87% | 1,607 | 0.8 | CDP |
| Choctaw | 10 | 608 | 938 | -3.19% | 97 | 6.3 | CDP |
| Supreme | 11 | 521 | 494 | -6.8% | 154 | 3.4 | CDP |
| Napoleonville | 12 | 504 | 542 | -1.95% | 3,000 | 0.2 | Village |
| Siracusaville | 13 | 360 | 387 | -1.37% | 451 | 0.8 | CDP |
| Bayou Corne | 14 | 24 | 54 | 4.35% | 66 | 0.4 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Bayou Blue is the largest city in Assumption Parish.
Bayou Corne is the smallest city in Assumption Parish.
There are 14 cities in Assumption Parish, Louisiana.