15 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 94533 | Fairfield | 78,537 |
| 95687 | Vacaville | 69,741 |
| 94591 | Vallejo | 58,516 |
| 94534 | Fairfield | 41,122 |
| 95688 | Vacaville | 39,216 |
| 94590 | Vallejo | 37,401 |
| 94589 | Vallejo | 30,199 |
| 94585 | Suisun City | 29,290 |
| 94510 | Benicia | 26,879 |
| 95620 | Dixon | 22,367 |
| 94571 | Rio Vista | 10,973 |
| 94535 | Travis Afb | 3,863 |
| 94592 | Vallejo | 922 |
| 95625 | Elmira | 248 |
| 94512 | Birds Landing | 134 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 15 ZCTAs in Solano County, California (US Census).