Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | San Diego (city), CA | 1,386,932 |
| 2 | Chula Vista (city), CA | 275,487 |
| 3 | El Cajon (city), CA | 106,215 |
| 4 | La Mesa (city), CA | 61,121 |
| 5 | Santee (city), CA | 60,037 |
| 6 | National City (city), CA | 56,173 |
| 7 | Poway (city), CA | 48,841 |
| 8 | La Presa (CDP), CA | 35,033 |
| 9 | Spring Valley (CDP), CA | 30,998 |
| 10 | Lemon Grove (city), CA | 27,627 |
| 11 | Imperial Beach (city), CA | 26,137 |
| 12 | Winter Gardens (CDP), CA | 22,380 |
| 13 | Rancho San Diego (CDP), CA | 21,858 |
| 14 | Lakeside (CDP), CA | 21,152 |
| 15 | Coronado (city), CA | 20,192 |
| 16 | Casa de Oro-Mount Helix (CDP), CA | 19,576 |
| 17 | Bostonia (CDP), CA | 16,882 |
| 18 | Alpine (CDP), CA | 14,696 |
| 19 | Bonita (CDP), CA | 12,917 |
| 20 | Jamul (CDP), CA | 6,179 |