Mendocino County, California Age & Gender Statistics (2024)

Total Population

90,244

Median Age

44.1

Male Median

43.2

Female Median

45.5

Mendocino County, California Population Growth

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

Mendocino County, California Demographic Trend

Since 2010, the population of has changed by +3.2%%.

+3.2%% Growth

Mendocino County, California Age & Gender Pyramid

Population pyramid for

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


Mendocino County, California Historical Population Data

YearMedian AgePopulation
202444.190,244
202343.990,709
202243.791,145
202143.691,534
202043.487,110
201943.187,224
201842.887,422
201742.487,497
201642.387,409
201542.287,544
201442.087,612
201341.887,497
201241.787,577
201141.487,525
201041.287,487

Mendocino County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1715.8%
18–246.9%
25–3410.8%
35–5423.8%
55–6413.0%
65+24.5%

Dependency Ratios for Mendocino County, California

Total Dependency Ratio:
83.4
Youth Dependency:
38.4
Old-Age Dependency:
45.0

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



Age & Gender FAQs for Mendocino County, California

The median age in Mendocino County, California is 44.1 years.

According to latest Census data, the total population of Mendocino County, California is 90,244.

In Mendocino County, California, seniors (ages 65+) make up 24.5% of the population, while children under 18 represent 15.8%.

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