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 | Pasadena (city), CA | 138,699 |
| 5 | Simi Valley (city), CA | 126,356 |
| 6 | Burbank (city), CA | 107,337 |
| 7 | Altadena (CDP), CA | 42,846 |
| 8 | West Hollywood (city), CA | 35,757 |
| 9 | South Pasadena (city), CA | 26,943 |
| 10 | San Fernando (city), CA | 23,946 |
| 11 | Calabasas (city), CA | 23,241 |
| 12 | La Cañada Flintridge (city), CA | 20,573 |
| 13 | Stevenson Ranch (CDP), CA | 20,178 |
| 14 | La Crescenta-Montrose (CDP), CA | 19,997 |
| 15 | Castaic (CDP), CA | 18,937 |
| 16 | East Pasadena (CDP), CA | 6,021 |
| 17 | Agua Dulce (CDP), CA | 3,451 |
| 18 | Val Verde (CDP), CA | 2,399 |
| 19 | San Pasqual (CDP), CA | 2,101 |
| 20 | Hidden Hills (city), CA | 1,725 |
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 | Pasadena (city), CA | 138,699 |
| 5 | Simi Valley (city), CA | 126,356 |
| 6 | Burbank (city), CA | 107,337 |
| 7 | Santa Monica (city), CA | 93,076 |
| 8 | Altadena (CDP), CA | 42,846 |
| 9 | West Hollywood (city), CA | 35,757 |
| 10 | South Pasadena (city), CA | 26,943 |
| 11 | San Fernando (city), CA | 23,946 |
| 12 | La Cañada Flintridge (city), CA | 20,573 |
| 13 | Stevenson Ranch (CDP), CA | 20,178 |
| 14 | La Crescenta-Montrose (CDP), CA | 19,997 |
| 15 | Castaic (CDP), CA | 18,937 |
| 16 | East Pasadena (CDP), CA | 6,021 |
| 17 | Agua Dulce (CDP), CA | 3,451 |
| 18 | Val Verde (CDP), CA | 2,399 |
| 19 | San Pasqual (CDP), CA | 2,101 |
| 20 | Hidden Hills (city), CA | 1,725 |