| District ID | 8th District |
| Representative | John Garamendi |
| Party Affiliation | Democrat |
| Partisan Voting Index (PVI) | R+9 |
| 94503 |
| 94509 |
| 94510 |
| 94512 |
| 94513 |
| 94519 |
| 94520 |
| 94521 |
| 94525 |
| 94530 |
| 94533 |
| 94534 |
| 94535 |
| 94547 |
| 94553 |
| 94561 |
| 94563 |
| 94564 |
| 94565 |
| 94569 |
| 94571 |
| 94572 |
| 94585 |
| 94589 |
| 94590 |
| 94591 |
| 94592 |
| 94706 |
| 94707 |
| 94708 |
| 94801 |
| 94803 |
| 94804 |
| 94805 |
| 94806 |
| 94850 |
| 95589 |
| 95620 |
| 95625 |
| 95687 |