| 1 | Felton CDP (south-southwest) | 9,533 |
| 2 | Interlaken CDP (north-northwest) | 7,136 |
| 3 | Pasatiempo CDP (north-northeast) | 6,730 |
| 4 | Pasatiempo CDP (south 1) | 6,636 |
| 5 | Pasatiempo CDP (north-northwest) | 6,189 |
| 6 | Zayante CDP (north-northwest) | 5,878 |
| 7 | Bonny Doon CDP (southeast 1) | 5,546 |
| 8 | Soquel CDP (east-northeast) | 5,393 |
| 9 | Santa Cruz city (south) | 5,260 |
| 10 | La Selva Beach CDP (north-northeast) | 5,182 |
| 11 | Scotts Valley city (south-southeast) | 5,005 |
| 12 | Watsonville city (south-southwest) | 4,889 |
| 13 | Santa Cruz city (east-southeast) | 4,749 |
| 14 | Boulder Creek CDP (northwest) | 4,712 |
| 15 | Freedom CDP (east-southeast) | 4,451 |
| 16 | Bonny Doon CDP (northwest) | 4,446 |
| 17 | Zayante CDP (south-southeast) | 4,441 |
| 18 | Capitola city (south) | 4,437 |
| 19 | Boulder Creek CDP (southeast) | 4,429 |
| 20 | Interlaken CDP (west-southwest) | 4,384 |
| 21 | Aptos Hills-Larkin Valley CDP (east) | 4,287 |
| 22 | Soquel CDP (south) | 4,266 |
| 23 | Live Oak CDP (south-southeast) | 4,238 |
| 24 | La Selva Beach CDP (east) | 4,186 |
| 25 | Interlaken CDP (south-southwest) | 4,145 |
| 26 | La Selva Beach CDP (west) | 4,062 |
| 27 | Pasatiempo CDP (south 2) | 4,057 |
| 28 | Felton CDP (north-northwest) | 4,053 |
| 29 | Live Oak CDP (northeast) | 4,036 |
| 30 | Twin Lakes CDP (west-northwest 2) | 3,941 |
| 31 | Rio del Mar CDP (east) | 3,844 |
| 32 | Scotts Valley city (north-northwest) | 3,827 |
| 33 | Pleasure Point CDP (southwest) | 3,794 |
| 34 | Ben Lomond CDP | 3,733 |
| 35 | Felton CDP (south-southeast) | 3,699 |
| 36 | La Selva Beach CDP (southeast) | 3,523 |
| 37 | Seacliff CDP (east) | 3,488 |
| 38 | Santa Cruz city (west) | 3,429 |
| 39 | Freedom CDP (south-southeast) | 3,415 |
| 40 | Twin Lakes CDP (northeast) | 3,300 |
| 41 | Watsonville city (east) | 3,270 |
| 42 | Capitola city (west-southwest) | 3,248 |
| 43 | Soquel CDP (north-northwest) | 3,199 |
| 44 | Day Valley CDP (south-southeast) | 3,169 |
| 45 | Santa Cruz city (west-northwest) | 3,167 |
| 46 | Watsonville city (south-southeast) | 3,156 |
| 47 | Watsonville city (north-northwest) | 3,150 |
| 48 | Watsonville city (west) | 3,042 |
| 49 | Day Valley CDP (east) | 3,039 |
| 50 | Live Oak CDP (south-southwest) | 3,036 |
| 51 | Bonny Doon CDP (south-southeast) | 3,025 |
| 52 | Interlaken CDP (west) | 3,025 |
| 53 | Twin Lakes CDP (west-northwest 1) | 3,025 |
| 54 | Freedom CDP (north-northwest) | 2,996 |
| 55 | Day Valley CDP (north-northwest) | 2,930 |
| 56 | Amesti CDP | 2,905 |
| 57 | Rio del Mar CDP (west) | 2,767 |
| 58 | Day Valley CDP (south-southwest) | 2,712 |
| 59 | Pleasure Point CDP (northeast) | 2,655 |
| 60 | Interlaken CDP (south) | 2,646 |
| 61 | Twin Lakes CDP (south-southeast) | 2,498 |
| 62 | Twin Lakes CDP (east-southeast) | 2,397 |
| 63 | Corralitos CDP | 2,375 |
| 64 | Aptos Hills-Larkin Valley CDP (west) | 2,327 |
| 65 | Live Oak CDP (northwest) | 2,304 |
| 66 | Capitola city (east-northeast) | 2,302 |
| 67 | Santa Cruz city (north-northeast) | 1,994 |
| 68 | Interlaken CDP (east) | 1,467 |
| 69 | Seacliff CDP (west) | 1,446 |