Find the last 4 digits (ZIP+4) for an address in 94596

ZIP 94596, Walnut Creek, CA is filled in. Just type the street address.

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ZIP Code 94596 – Walnut Creek, CA

Walnut Creek, California · Contra Costa County · Pacific time

ZIP code94596
CityWalnut Creek
StateCalifornia
CountyContra Costa County
Population23,417
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area6.06 sq mi
Center (lat, long)37.8890, -122.0368

Area codes in this area

925

These are the area codes that most often serve ZIP 94596 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

94595 Walnut Creek · 2.1 mi94598 Walnut Creek · 2.3 mi94597 Walnut Creek · 2.7 mi94507 Alamo · 2.9 mi94518 Concord · 4.3 mi94549 Lafayette · 4.6 mi94523 Pleasant Hill · 5 mi94575 Moraga · 5.2 mi

About ZIP 94596

ZIP code 94596 is assigned to Walnut Creek, California. It lies in Contra Costa County. Its Census area covers about 6.06 square miles of land. The closest neighboring ZIP is 94595 (Walnut Creek), about 2.1 miles away.

Every address in 94596 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources