About ZIP code 91978
The ZIP code 91978 routes mail to Spring Valley in the California region of United States. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
United States ยท ZIP code
91978 - Spring Valley
ZIP code 91978 is Spring Valley in California, United States.
| ZIP code | 91978 |
| Place | Spring Valley |
| Region | California |
| District | San Diego |
| Country | United States (US) |
| Coordinates | 32.7329, -116.9596 (map) |