Find the last 4 digits (ZIP+4) for an address in 94520

ZIP 94520, Concord, CA is filled in. Just type the street address.

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ZIP Code 94520 – Concord, CA

Concord, California · Contra Costa County · Pacific time

ZIP code94520
CityConcord
StateCalifornia
CountyContra Costa County
Population37,381
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area9.87 sq mi
Center (lat, long)37.9930, -122.0353

Area codes in this area

925

These are the area codes that most often serve ZIP 94520 (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

94522 Concord · 1.1 mi94524 Concord · 1.1 mi94529 Concord · 1.1 mi94519 Concord · 1.3 mi94518 Concord · 3 mi94523 Pleasant Hill · 3.5 mi94521 Concord · 4.5 mi94527 Concord · 5 mi

About ZIP 94520

ZIP code 94520 is assigned to Concord, California. It lies in Contra Costa County. Its Census area covers about 9.87 square miles of land. The closest neighboring ZIP is 94522 (Concord), about 1.1 miles away.

Every address in 94520 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