Napa County, California Age & Gender Statistics (2024)

Total Population

134,869

Median Age

42.9

Male Median

42.2

Female Median

44.0

Napa County, California Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Napa County, California Demographic Trend

Since 2010, the population of has changed by +0.6%%.

+0.6%% Growth

Napa County, California Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Napa County, California Historical Population Data

YearMedian AgePopulation
202442.9134,869
202342.8136,070
202242.5137,384
202142.1138,795
202041.8138,572
201941.3139,623
201841.1140,530
201740.8141,005
201640.7140,823
201540.3140,295
201440.3139,253
201339.8137,837
201239.6136,644
201139.5135,377
201039.4134,051

Napa County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 54.5%
5–1715.0%
18–248.2%
25–3412.0%
35–5425.7%
55–6413.4%
65+21.1%

Dependency Ratios for Napa County, California

Total Dependency Ratio:
68.2
Youth Dependency:
32.7
Old-Age Dependency:
35.5

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Napa County, California

The median age in Napa County, California is 42.9 years.

According to latest Census data, the total population of Napa County, California is 134,869.

In Napa County, California, seniors (ages 65+) make up 21.1% of the population, while children under 18 represent 15.0%.

Based on historical data since 2010, the population in Napa County, California is aging.
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