Identifiers: city · town · CDP · village
| Rank | Community | Population |
|---|---|---|
| 1 | Lafayette (city), LA | 121,374 |
| 2 | Youngsville (city), LA | 15,929 |
| 3 | Opelousas (city), LA | 15,786 |
| 4 | Broussard (city), LA | 13,417 |
| 5 | Carencro (city), LA | 9,272 |
| 6 | Scott (city), LA | 8,119 |
| 7 | Breaux Bridge (city), LA | 7,513 |
| 8 | Rayne (city), LA | 7,236 |
| 9 | St. Martinville (city), LA | 5,379 |
| 10 | Sunset (town), LA | 2,909 |
| 11 | Milton (CDP), LA | 2,590 |
| 12 | Ossun (CDP), LA | 2,145 |
| 13 | Maurice (village), LA | 2,118 |
| 14 | Cecilia (CDP), LA | 1,807 |
| 15 | Henderson (town), LA | 1,617 |
| 16 | Duson (town), LA | 1,326 |
| 17 | Arnaudville (town), LA | 1,009 |
| 18 | Grand Coteau (town), LA | 776 |
| 19 | Parks (village), LA | 640 |
| 20 | Cankton (village), LA | 583 |