Diablo, CA ZIP code
The ZIP code for Diablo, California is 94528. It is in Contra Costa County.
- Population in these ZIPs
- 1,049
- Avg. median income
- $207,500population-weighted
- Typical home value
- $3,107,100population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Diablo, CA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 94528 | 1,049 | $207,500 | $3,107,100 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Diablo
- Danville 2 mi
- Alamo 3 mi
- Clayton 5 mi
- San Ramon 5 mi
- Moraga 6 mi
- Walnut Creek 6 mi
- Dublin 9 mi
- Concord 9 mi
- Castro Valley 10 mi
- Lafayette 10 mi
- Pleasanton 10 mi
- Pleasant Hill 10 mi
Frequently asked questions
What is the ZIP code for Diablo, CA?
The ZIP code for Diablo, CA is 94528.
What county is Diablo, California in?
Diablo ZIP codes are in Contra Costa County.