Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Thousand Oaks (city), CA | 126,966 |
| 2 | Simi Valley (city), CA | 126,356 |
| 3 | San Buenaventura (Ventura) (city), CA | 110,763 |
| 4 | Camarillo (city), CA | 70,741 |
| 5 | Moorpark (city), CA | 36,284 |
| 6 | Calabasas (city), CA | 23,241 |
| 7 | Agoura Hills (city), CA | 20,299 |
| 8 | Oak Park (CDP), CA | 13,898 |
| 9 | Malibu (city), CA | 10,654 |
| 10 | Topanga (CDP), CA | 8,560 |
| 11 | Westlake Village (city), CA | 8,029 |
| 12 | El Rio (CDP), CA | 7,037 |
| 13 | Santa Rosa Valley (CDP), CA | 3,312 |
| 14 | Casa Conejo (CDP), CA | 3,267 |
| 15 | Pepperdine University (CDP), CA | 2,747 |
| 16 | Bell Canyon (CDP), CA | 1,946 |
| 17 | Lake Sherwood (CDP), CA | 1,759 |
| 18 | Hidden Hills (city), CA | 1,725 |
| 19 | Somis (CDP), CA | 1,429 |
| 20 | Santa Susana (CDP), CA | 1,160 |