Find the last 4 digits (ZIP+4) for an address in 94503

ZIP 94503, American Canyon, CA is filled in. Just type the street address.

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ZIP Code 94503 – American Canyon, CA

American Canyon, California · Napa County · Pacific time

ZIP code94503
CityAmerican Canyon
StateCalifornia
CountyNapa CountySolano County
Population21,841
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area27.02 sq mi
Center (lat, long)38.1879, -122.2236

Area codes in this area

707369

These are the area codes that most often serve ZIP 94503 (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

94589 Vallejo · 3.4 mi94591 Vallejo · 4.4 mi94559 Napa · 5.9 mi94590 Vallejo · 6.5 mi94534 Fairfield · 6.8 mi94592 Vallejo · 7.5 mi94510 Benicia · 7.6 mi94581 Napa · 8.2 mi

About ZIP 94503

ZIP code 94503 is assigned to American Canyon, California. It crosses 2 counties; most of its land is in Napa County. Its Census area covers about 27.02 square miles of land. The closest neighboring ZIP is 94589 (Vallejo), about 3.4 miles away.

Every address in 94503 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