94503 ZIP Code — American Canyon, CA

Napa County, California

ZIP code 94503 is located in American Canyon, California, within Napa County. It covers approximately 27.03 square miles and serves a population of 21,791 residents. This is a po box ZIP code in the Pacific (PT) timezone, served by area code 707.

About ZIP code 94503

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $641,200. Owner-occupancy is high at 79%, well above the national average.

The gap between median ($122,500) and mean household income suggests income inequality — a small number of higher earners pull the average up. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 33 minutes is near the national average.

Educational attainment is near the national average, with 34% of residents holding a bachelor's degree or higher.

Overall, ZIP code 94503 reflects a community defined by high homeownership and a significant Social Security-dependent population.

21,791

population

27.03

sq mi land

PO Box

ZIP type

Pacific (PT)

timezone

94503 ZIP code map

Cities in ZIP code 94503

Below are the cities the US Postal Service accepts for ZIP code 94503. Using any city not on this list may result in mail delivery delays.

City	Status
American Canyon	Acceptable
American Canyon	Acceptable
American Canyon	Preferred

Nearby ZIP codes

94589 Vallejo (4.6 mi) 94534 Fairfield (6 mi) 94534 Fairfield (6 mi) 94559 Napa (6.2 mi) 94591 Vallejo (6.5 mi) 94590 Vallejo (7.6 mi) 94592 Vallejo (8.3 mi) 94510 Benicia (9.4 mi) 94525 Crockett (10.7 mi) 94572 Rodeo (12 mi) 94533 Fairfield (12.7 mi) 95476 Sonoma (12.8 mi)

Demographics updated 05/2026

Population
Total population	21,791
Population density	806 / sq mi
State FIPS	06
County FIPS	055

Geography
Land area	27.03 sq mi
Water area	1.61 sq mi
Latitude	38.2036
Longitude	-122.2319
Timezone	Pacific (PT)
Area code	707

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.4%	26.8%	32.6%
$50k – $100k	22.4%	26.3%	27.7%
$100k – $200k	39.2%	30.4%	26.4%
Over $200k	17.0%	16.5%	13.3%

Demographics & statistics

21,791

Population

806

People per sq mi

36.4

Median age

$122,500

Median household income

$41,861

Per capita income

$641,200

Median home value

$2,296

Median monthly rent

78.9%

Home ownership

7.6%

Poverty rate

5.0%

Unemployment

4,766

Housing units

33.9%

Bachelor's or higher

Age distribution

Male Female

556

Under 5

590

631

5–9

670

948

10–14

1,008

814

15–19

866

897

20–24

953

1,291

25–34

1,372

1,272

35–44

1,351

1,432

45–54

1,521

673

55–59

715

682

60–64

725

807

65–74

858

425

75–84

451

137

85+

146

← Male

Female →

Age summary

Group	Count	%
Under 18	5,524	25.3%
18 and over	16,267	74.7%
65 and over	2,824	13.0%
Median age	36.4 years

Race & ethnicity

Asian 29.7%

White 28.1%

Hispanic or Latino 14.4%

Other race 10.5%

Two or more races 10.1%

Black or African American 5.2%

Native Hawaiian / Pacific Islander 1.3%

American Indian / Alaska Native 0.7%

Group	Count	%
Asian	7,562	29.7%
White	7,147	28.1%
Hispanic or Latino	3,668	14.4%
Other race	2,679	10.5%
Two or more races	2,579	10.1%
Black or African American	1,328	5.2%
Native Hawaiian / Pacific Islander	327	1.3%
American Indian / Alaska Native	169	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.4%	26.8%	32.6%
$50k – $100k	22.4%	26.3%	27.7%
$100k – $200k	39.2%	30.4%	26.4%
Over $200k	17.0%	16.5%	13.3%

Under $10k 3.5%

$10k–$15k 2.0%

$15k–$25k 2.5%

$25k–$35k 5.9%

$35k–$50k 3.7%

$50k–$75k 11.5%

$75k–$100k 10.9%

$100k–$150k 20.7%

$150k–$200k 16.1%

$200k+ 23.3%

Range	% of households
Under $10k	3.5%
$10k–$15k	2.0%
$15k–$25k	2.5%
$25k–$35k	5.9%
$35k–$50k	3.7%
$50k–$75k	11.5%
$75k–$100k	10.9%
$100k–$150k	20.7%
$150k–$200k	16.1%
$200k+	23.3%
Median income	$122,500

Housing

Home values

Under $50k 2.3%

$50k–$100k 4.2%

$100k–$150k 4.7%

$150k–$200k 3.0%

$200k–$300k 3.5%

$300k–$500k 9.7%

$500k–$1M 68.3%

$1M+ 4.4%

Housing overview

Metric	Value
Median home value	$641,200
Median rent / month	$2,296
Owner occupied	78.9%
Renter occupied	21.1%
Vacant	3.3%
Single-family detached	72.4%
Large apartment buildings	7.1%
Mobile homes	13.9%
Median rooms	6.1
Avg household size (owned)	3.82

Year built

Era	%
2020 or later	0.5%
2010–2019	7.3%
2000–2009	35.2%
1990–1999	14.0%
1980–1989	14.9%
1970–1979	11.9%
1960–1969	6.7%
1950–1959	8.4%
1940–1949	0.9%
1939 or earlier	0.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.1%
1 bedroom	6.5%
2 bedrooms	16.9%
3 bedrooms	37.0%
4 bedrooms	25.5%
5+ bedrooms	14.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	19.4%
2 vehicles	32.3%
3 or more	46.0%

Heating fuel

Fuel type	%
Utility gas	63.9%
Electricity	30.7%
Propane / LP gas	1.6%
Wood	0.3%
Solar	1.6%
No fuel used	1.8%

Households & families

Household type	Count	%
Married-couple family	3,764	65.0%
Cohabiting couple	293	5.1%
Male householder, no spouse	527	9.1%
Female householder, no spouse	1,206	20.8%
Households with children under 18	2,637	45.5%
Households with seniors (65+)	1,818	31.4%
Average household size	3.74

Marital status

Status	Male	Female
Never married	36.3%	34.2%
Married	54.3%	47.3%
Separated	0.7%	2.7%
Widowed	1.6%	7.7%
Divorced	7.0%	8.2%

Education

Less than 9th grade 9.0%

Some HS, no diploma 5.4%

HS graduate 19.2%

Some college, no degree 22.5%

Associate's degree 10.1%

Bachelor's degree 24.7%

Graduate / professional 9.1%

Metric	%
HS diploma or higher	85.6%
Bachelor's or higher	33.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	295	4.4%
Kindergarten	312	4.7%
Elementary school	2,669	39.8%
High school	1,534	22.9%
College / grad school	1,895	28.3%

Employment

Industry of employment

Education & healthcare 30.6%

Retail trade 11.7%

Arts, food & hospitality 11.3%

Manufacturing 8.7%

Public administration 7.7%

Professional & management 7.0%

Transportation & utilities 6.1%

Construction 4.0%

Finance & real estate 3.9%

Other services 3.0%

Agriculture & mining 2.7%

Wholesale trade 2.2%

Information 1.3%

Occupation

Category	%
Management, business & arts	37.3%
Service	18.9%
Sales & office	21.9%
Natural resources & construction	8.5%
Production & transportation	13.5%

Employment type

Type	%
Private sector	73.9%
Government	22.2%
Self-employed	3.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	74.9%
Carpool	11.5%
Public transit	2.7%
Walk	0.4%
Work from home	8.3%
Other means	2.2%
Avg commute (minutes)	33.3

Poverty

All people 7.6%

Under 18 years 8.1%

18 and over 7.4%

Married-couple families 4.7%

Female-led households 23.3%

Income support

Source	% of households
Social Security	31.3%
Retirement income	26.5%
Supplemental Security	4.9%
Cash public assistance	2.6%
Food stamps / SNAP	7.2%

Health indicators

Condition	%
Obesity	24.2%
High blood pressure	25.9%
High cholesterol	28.7%
Diabetes	9.4%
Heart disease	4.5%
Stroke	2.3%
Asthma	8.9%
Arthritis	18.0%
Kidney disease	2.3%
Pulmonary disease	4.5%
Cancer	4.8%

Behavior / access	%
Smoking	11.6%
Binge drinking	16.8%
No physical activity	20.4%
Less than 7 hrs sleep	33.5%
Depression	15.2%
Fair or poor health	12.6%
Poor mental health	13.3%
Poor physical health	8.5%
No health insurance	12.0%
Visited doctor (checkup)	66.0%
Visited dentist	62.9%
Cholesterol screening	90.5%
Teeth loss	9.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	840	5.2%

Disability	%
Any disability	10.2%
Under 18	1.6%
18–64 years	8.3%
65 and over	36.1%

Health insurance coverage

Type	%
Private insurance	72.4%
Public insurance	31.5%
No insurance	5.3%
Uninsured under 19	5.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,645	94.7%
Spanish	3,398	16.5%
Other Indo-European	1,747	8.5%
Asian & Pacific Islander	333	1.6%
Other languages	1,287	6.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,044	69.0%
Born in same state	14,666	67.3%
Born in different state	12,479	57.3%
Foreign born	378	1.7%
Naturalized citizen	6,747	31.0%
Not a US citizen	4,718	69.9%

Ancestry

Ancestry	Count	%
Italian	860	3.9%
French	600	2.8%
Arab	583	2.7%
English	139	0.6%

Ancestry	Count	%
Polish	53	0.2%
Irish	32	0.1%
German	23	0.1%
Dutch	4	0%

Technology access

Metric	% of households
Computer access	26.6%
Internet access	97.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 94503

What city is ZIP code 94503 in?

ZIP code 94503 is primarily assigned to American Canyon, California.

What county is ZIP code 94503 in?

ZIP code 94503 falls within Napa County, California.

What is the median household income in ZIP code 94503?

The median household income in ZIP code 94503 is $122,500, above the national median of ~$75,000.

What is the typical home value in ZIP code 94503?

The median home value in ZIP code 94503 is $641,200.

What is the population of ZIP code 94503?

ZIP code 94503 has an estimated population of 21,791 residents, with a density of 806 people per square mile.

What timezone is ZIP code 94503 in?

ZIP code 94503 observes the PST timezone.