| City | 2010 Census | 2000 Census | 1990 Census |
|---|---|---|---|
| Westlake Village | 8,270 | 8,368 | 7,455 |
| Rolling Hills Estates | 8,067 | 7,676 | 7,789 |
| La Habra Heights | 5,325 | 5,712 | 6,226 |
| Avalon | 3,728 | 3,127 | 2,918 |
| Rolling Hills | 1,860 | 1,871 | 1,871 |
| Hidden Hills | 1,856 | 1,875 | 1,729 |
| Irwindale | 1,422 | 1,446 | 1,050 |
| Bradbury | 1,048 | 855 | 832 |
| Industry | 219 | 777 | 580 |
| Vernon | 112 | 91 | 146 |
Source: U.S. Census Bureau
