Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Oakland (city), CA | 440,646 |
| 2 | Vallejo (city), CA | 126,090 |
| 3 | Concord (city), CA | 125,410 |
| 4 | Berkeley (city), CA | 124,321 |
| 5 | Fairfield (city), CA | 119,881 |
| 6 | Richmond (city), CA | 116,448 |
| 7 | San Leandro (city), CA | 91,008 |
| 8 | Alameda (city), CA | 78,280 |
| 9 | Pittsburg (city), CA | 76,416 |
| 10 | Walnut Creek (city), CA | 70,127 |
| 11 | San Rafael (city), CA | 61,271 |
| 12 | Martinez (city), CA | 37,287 |
| 13 | Pleasant Hill (city), CA | 34,613 |
| 14 | San Pablo (city), CA | 32,127 |
| 15 | Suisun City (city), CA | 29,518 |
| 16 | Benicia (city), CA | 27,131 |
| 17 | El Cerrito (city), CA | 25,962 |
| 18 | Lafayette (city), CA | 25,391 |
| 19 | Bay Point (CDP), CA | 23,896 |
| 20 | Ashland (CDP), CA | 23,823 |