ZIP code · Walnut Creek · California · United States
ZIP code 94597 — Walnut Creek
ZIP code 94597 serves Walnut Creek, California.
- Postal code
- 94597Single source Value from one source, not cross-checked.
- City
- Walnut Creek
- County
- Contra Costa FIPS 06013
- State
- California
- Country
- United States
- Coordinates
- 37.9182, -122.0717 — precision precise (locality)
View on OpenStreetMap - Population
- 24,235 (ZCTA, ACS 5-year)
- Population density
- 5,978 / sq mi
- Land area
- 4.1 sq mi (10.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $142,685
- Per-capita income
- $72,002
- Median age
- 36.9
- Households
- 10,731
- Housing units
- 11,262
- Median home value
- $986,700
- Median gross rent
- $2,557 / month
- Congressional district
- CA-10 (119th Congress)
- USDA hardiness zone
- 9b (25 to 30 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Los_Angeles (UTC−8 / UTC−7 DST)
- Area code
- 925Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 94597 with another ZIP · ZIPs within 25 miles · distance from 94597
Map of ZIP code 94597
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Dec (avg low 41°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 58 | 63 | 68 | 72 | 78 | 85 | 88 | 88 | 86 | 78 | 67 | 59 |
| Avg low °F | 42 | 44 | 47 | 49 | 53 | 57 | 58 | 59 | 58 | 53 | 46 | 41 |
| Precip in | 3.5 | 3.6 | 2.6 | 1.2 | 0.6 | 0.1 | 0.0 | 0.0 | 0.1 | 0.7 | 1.9 | 3.5 |
NOAA 1991–2020 climate normals from the nearest station: CONCORD WWTP (4.5 mi) · NOAA NCEI
Places in ZIP 94597
- 6 schools
- 1 hospitals & clinics
- 2 doctors & dentists
- 3 supermarkets
- 27 restaurants & cafés
- 1 bars & pubs
- 3 parks
- 11 playgrounds
- 4 gyms & sports centres
- 1 post offices
- 9 places of worship
- 1 banks
- 3 gas stations
- 2 EV charging stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page