Walnut Creek, CA ZIP codes
Walnut Creek, California has 4 ZIP codes. They are in Contra Costa County.
- Population in these ZIPs
- 90,740
- Avg. median income
- $143,300population-weighted
- Typical home value
- $1,057,800population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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Walnut Creek, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 94595 | Contra Costa County | 16,988 | $100,552 | $665,900 |
| 94596 | Contra Costa County | 23,417 | $135,635 | $1,064,400 |
| 94597 | Contra Costa County | 23,129 | $132,063 | $972,200 |
| 94598 | Contra Costa County | 27,206 | $186,225 | $1,369,600 |
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 Walnut Creek
Frequently asked questions
What is the ZIP code for Walnut Creek, CA?
Walnut Creek, CA has 4 ZIP codes: 94595, 94596, 94597 and 94598.
What county is Walnut Creek, California in?
Walnut Creek ZIP codes are in Contra Costa County.