ZIP Code 91788
Walnut · Los Angeles, California
91788 is the ZIP code of Walnut in Los Angeles, California, United States.
- ZIP Code
- 91788
- County
- Los Angeles
- State
- California
- Country
- United States
Place with ZIP code 91788
| Place | County | Location |
|---|---|---|
| Walnut | Los Angeles | 34.020, -117.865 |
Near Los Angeles
The nearest major city is Los Angeles, about 35 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 91788?
Walnut.
Which county and state is 91788 in?
Los Angeles, California, United States.
What is the nearest major city to 91788?
Los Angeles, about 35 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.