Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Los Angeles (city), CA | 3,898,747 |
| 2 | Santa Clarita (city), CA | 228,673 |
| 3 | Glendale (city), CA | 196,543 |
| 4 | Torrance (city), CA | 147,067 |
| 5 | Pasadena (city), CA | 138,699 |
| 6 | Thousand Oaks (city), CA | 126,966 |
| 7 | Simi Valley (city), CA | 126,356 |
| 8 | East Los Angeles (CDP), CA | 118,786 |
| 9 | Inglewood (city), CA | 107,762 |
| 10 | Burbank (city), CA | 107,337 |
| 11 | Santa Monica (city), CA | 93,076 |
| 12 | Hawthorne (city), CA | 88,083 |
| 13 | Alhambra (city), CA | 82,868 |
| 14 | Lynwood (city), CA | 67,265 |
| 15 | Florence-Graham (CDP), CA | 61,983 |
| 16 | Monterey Park (city), CA | 61,096 |
| 17 | Gardena (city), CA | 61,027 |
| 18 | Arcadia (city), CA | 56,681 |
| 19 | Rosemead (city), CA | 51,185 |
| 20 | Altadena (CDP), CA | 42,846 |