Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Riverside (city), CA | 314,998 |
| 2 | San Bernardino (city), CA | 222,101 |
| 3 | Moreno Valley (city), CA | 208,634 |
| 4 | Murrieta (city), CA | 110,949 |
| 5 | Temecula (city), CA | 110,003 |
| 6 | Jurupa Valley (city), CA | 105,053 |
| 7 | Menifee (city), CA | 102,527 |
| 8 | Hemet (city), CA | 89,833 |
| 9 | Perris (city), CA | 78,700 |
| 10 | Redlands (city), CA | 73,168 |
| 11 | Lake Elsinore (city), CA | 70,265 |
| 12 | Colton (city), CA | 53,909 |
| 13 | San Jacinto (city), CA | 53,898 |
| 14 | Wildomar (city), CA | 36,875 |
| 15 | French Valley (CDP), CA | 35,280 |
| 16 | Loma Linda (city), CA | 24,791 |
| 17 | Bloomington (CDP), CA | 24,339 |
| 18 | Mead Valley (CDP), CA | 19,819 |
| 19 | East Hemet (CDP), CA | 19,432 |
| 20 | Woodcrest (CDP), CA | 15,378 |