Identifiers: city · CDP
| Rank | Community | Population |
|---|---|---|
| 1 | Santa Cruz (city), CA | 62,956 |
| 2 | Watsonville (city), CA | 52,590 |
| 3 | Live Oak (CDP), CA | 17,038 |
| 4 | Scotts Valley (city), CA | 12,224 |
| 5 | Soquel (CDP), CA | 9,980 |
| 6 | Capitola (city), CA | 9,938 |
| 7 | Rio del Mar (CDP), CA | 9,128 |
| 8 | Castroville (CDP), CA | 7,515 |
| 9 | Interlaken (CDP), CA | 7,368 |
| 10 | Aptos (CDP), CA | 6,664 |
| 11 | Ben Lomond (CDP), CA | 6,337 |
| 12 | Pleasure Point (CDP), CA | 5,821 |
| 13 | Boulder Creek (CDP), CA | 5,429 |
| 14 | Twin Lakes (CDP), CA | 4,944 |
| 15 | Felton (CDP), CA | 4,489 |
| 16 | Freedom (CDP), CA | 3,835 |
| 17 | Seacliff (CDP), CA | 3,280 |
| 18 | Las Lomas (CDP), CA | 3,046 |
| 19 | Pajaro (CDP), CA | 2,882 |
| 20 | Bonny Doon (CDP), CA | 2,868 |