Napa County, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 34th-largest in California
The population of Napa County, California is 136,070 as of the 2023 American Community Survey, making it the 34th-largest county in California. The median household income is $108,970, the median home value is $838,800, and the median age is 42.8.
The population of Napa County has declined 2.9% since 2010 (136,752 → 132,727), a -0.21% annualized rate.
136,070
Population
-0.21%
Annual growth
181
People / sq mi
$108,970
Median Income
$838,800
Median Home Value
Napa County covers 752 sq mi of land at 181.0 people per square mile.
About Napa County, CA
In Napa County, home values do the distinguishing — a median of $838,800. With 136,070 residents, Napa County is a county in California. It ranks #34 among counties in California by population.
Income is a real outlier — the median household pulls in $108,970, putting Napa County near the top of US counties. Poverty is relatively low for US counties at 5.6%, below the national 12.4%. Housing is expensive: the median home is worth $838,800, with typical rent around $2,141.
Degree attainment is near the top of the range for US counties: 38.5% of adults 25+ hold a bachelor’s, above the 35.0% national rate. A solid 12.5% of workers are based at home, below the national 14.0%, and the average commute runs about 25 minutes each way.
High housing values reframe the income picture in Napa County — even solid earnings stretch less against home prices and rents at this level.
Napa County Population History (2010-2024)
The county of Napa County had a population of 136,752 in 2010 and 132,727 in 2024, a -2.9% growth over 14 years. The peak was 140,778 in 2016. Average annual growth rate: -0.21%.
132,727
Population (2024)
136,752
Population (2010)
140,778
Peak (2016)
-0.21%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 136,752 |
| 2011 | 137,668 |
| 2012 | 138,504 |
| 2013 | 139,522 |
| 2014 | 140,331 |
| 2015 | 140,766 |
| 2016 | 140,778 |
| 2017 | 139,818 |
| 2018 | 138,620 |
| 2019 | 137,678 |
| 2020 | 137,465 |
| 2021 | 136,219 |
| 2022 | 134,492 |
| 2023 | 133,444 |
| 2024 | 132,727 |
Race & Ethnicity
| White | 60.1% |
| Black or African American | 1.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.5% |
| Two or More Races | 0.0% |
Age & Sex
42.8
Median Age
50.0%
Female
50.0%
Male
20.6%
Age 65+
Age Distribution
Children (under 15): 15.9% · Seniors (65+): 20.6%
Income & Poverty
| Median household income | $108,970+$12,636 vs state |
| Mean household income | $154,011 |
| Per-capita income | $57,795 |
| Poverty rate | 5.6%-2.8% vs state |
| Unemployment rate | 3.2% |
| Employment-to-population | 60.2% |
Top Industries by Employment
The largest employment sector in Napa County is professional & business services, accounting for 22.1% of workers.
How residents commute
1.2%
Drive alone
3.4%
Carpool
71.3%
Public transit
12.5%
Work from home
24.9 min
Avg commute
Housing
$838,800+$143,400 vs state
Median home value
$2,141
Median rent
64.4%
Homeownership rate
55,601
Total housing units
89.3%
Occupied
10.7%
Vacant
35.6%
Renter-occupied
Social & access
94.3%
With health insurance
97.1%
With broadband internet
18.0%
Foreign-born
5.4%
Veterans (18+)
12.8%
With a disability
66.1%
Speak language other than English at home
Education
84.7%
High School+
38.5%
Bachelor's+
Largest cities in California
Other counties in California
Part of California
Metro areas in California
County rankings
Frequently Asked Questions
Napa County, California has a population of 136,070 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 34th-largest county in California. Population density is 181 people per square mile.
The population of Napa County has declined 2.9% since 2010 (136,752 → 132,727), a -0.21% annualized rate.
The median household income in Napa County, California is $108,970, with mean (average) household income of $154,011 and per-capita income of $57,795. 5.6% of residents live below the federal poverty level.
In Napa County, the largest racial and ethnic groups are White (60.1%), Hispanic or Latino (2.5%), Black or African American (1.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Napa County, California is 42.8 years. Residents are 50.0% female and 50.0% male.
The median home value in Napa County is $838,800 and median monthly rent is $2,141. 64.4% of occupied housing units are owner-occupied. The county has 55,601 total housing units, 10.7% of which are vacant.
The largest employment sector in Napa County, California is professional, scientific, and management services, employing 22.1% of workers. The unemployment rate is 3.2%.
Los Angeles is among the largest cities associated with Napa County, California, with a population of 3,857,897.
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Statewide data for California
Population, race, income, age, and trends across California
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.