ZIP Code 94531
Antioch · Contra Costa, California
94531 is the ZIP code of Antioch in Contra Costa, California, United States.
- ZIP Code
- 94531
- County
- Contra Costa
- State
- California
- Country
- United States
Place with ZIP code 94531
| Place | County | Location |
|---|---|---|
| Antioch | Contra Costa | 37.966, -121.776 |
Near San Francisco
The nearest major city is San Francisco, about 60 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 94531?
Antioch.
Which county and state is 94531 in?
Contra Costa, California, United States.
What is the nearest major city to 94531?
San Francisco, about 60 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.