Orange County, California Age & Gender Statistics (2024)

Total Population

3,165,820

Median Age

39.4

Male Median

38.3

Female Median

40.5

Orange County, California Population Growth

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

Orange County, California Demographic Trend

Since 2010, the population of has changed by +6.8%%.

+6.8%% Growth

Orange County, California Age & Gender Pyramid

Population pyramid for

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


Orange County, California Historical Population Data

YearMedian AgePopulation
202439.43,165,820
202339.13,164,063
202238.73,175,227
202138.53,182,923
202038.33,170,345
201938.13,168,044
201837.83,164,182
201737.53,155,816
201637.33,132,211
201537.13,116,069
201436.73,086,331
201336.43,051,771
201236.23,021,840
201136.02,989,948
201035.72,965,525

Orange County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 55.2%
5–1715.8%
18–248.9%
25–3414.2%
35–5426.5%
55–6413.1%
65+16.3%

Dependency Ratios for Orange County, California

Total Dependency Ratio:
59.4
Youth Dependency:
33.5
Old-Age Dependency:
25.9

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



Age & Gender FAQs for Orange County, California

The median age in Orange County, California is 39.4 years.

According to latest Census data, the total population of Orange County, California is 3,165,820.

In Orange County, California, seniors (ages 65+) make up 16.3% of the population, while children under 18 represent 15.8%.

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