Find the last 4 digits (ZIP+4) for an address in 94304

ZIP 94304, Palo Alto, CA is filled in. Just type the street address.

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ZIP Code 94304 – Palo Alto, CA

Palo Alto, California · Santa Clara County · Pacific time

ZIP code94304
CityPalo Alto
StateCalifornia
CountySanta Clara County
Population5,000
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area4.81 sq mi
Center (lat, long)37.3973, -122.1670

Area codes in this area

650

These are the area codes that most often serve ZIP 94304 (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

94305 Stanford · 1.5 mi94306 Palo Alto · 2.4 mi94028 Portola Valley · 2.9 mi94023 Los Altos · 3 mi94022 Los Altos · 3.1 mi94302 Palo Alto · 3.3 mi94309 Palo Alto · 3.3 mi94301 Palo Alto · 3.4 mi

About ZIP 94304

ZIP code 94304 is assigned to Palo Alto, California. It lies in Santa Clara County. Its Census area covers about 4.81 square miles of land. The closest neighboring ZIP is 94305 (Stanford), about 1.5 miles away.

Every address in 94304 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