Find the last 4 digits (ZIP+4) for an address in 94598

ZIP 94598, Walnut Creek, CA is filled in. Just type the street address.

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ZIP Code 94598 – Walnut Creek, CA

Walnut Creek, California · Contra Costa County · Pacific time

ZIP code94598
CityWalnut Creek
StateCalifornia
CountyContra Costa County
Population27,206
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area20.61 sq mi
Center (lat, long)37.9169, -122.0149

Area codes in this area

925

These are the area codes that most often serve ZIP 94598 (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

94596 Walnut Creek · 2.3 mi94518 Concord · 2.4 mi94597 Walnut Creek · 3.1 mi94521 Concord · 3.5 mi94527 Concord · 4 mi94523 Pleasant Hill · 4.2 mi94595 Walnut Creek · 4.3 mi94522 Concord · 4.3 mi

About ZIP 94598

ZIP code 94598 is assigned to Walnut Creek, California. It lies in Contra Costa County. Its Census area covers about 20.61 square miles of land. The closest neighboring ZIP is 94596 (Walnut Creek), about 2.3 miles away.

Every address in 94598 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