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Zip Code 94503 — American Canyon, CA

94503 is a ZIP Code associated with American Canyon, CA, located within Napa. The postal region supports an estimated population of 21,841 residents across Data Pending housing units, with a population density of 311.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.194540, -122.230420)

Data MetricLocal Statistic
Postal / Zip Code94503
Primary CityAmerican Canyon
State / ProvinceCA
CountyNapa
Total Population21,841
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density311.9 people/sq mi
TimezoneAmerica/Los_Angeles

How 94503 Compares

MetricZIP 94503Napa CountyCA State Average
Population21,841128,36739,286,245
Median IncomeData PendingN/AN/A
Population Density311.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 94589Vallejo3.8 mi29,990N/A
Zip 94591Vallejo5.0 mi58,193N/A
Zip 94559Napa5.3 mi27,714N/A
Zip 94534Fairfield6.7 mi41,203N/A
Zip 94592Vallejo6.8 mi1,049N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →