Los Angeles County, California Age & Gender Statistics (2024)

Total Population

9,808,667

Median Age

38.2

Male Median

37.3

Female Median

39.2

Los Angeles County, California Population Growth

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

Los Angeles County, California Demographic Trend

Since 2010, the population of has changed by +0.5%%.

+0.5%% Growth

Los Angeles County, California Age & Gender Pyramid

Population pyramid for

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


Los Angeles County, California Historical Population Data

YearMedian AgePopulation
202438.29,808,667
202337.99,848,406
202237.49,936,690
202137.010,019,635
202036.710,040,682
201936.510,081,570
201836.210,098,052
201736.010,105,722
201635.810,057,155
201535.610,038,388
201435.39,974,203
201335.19,893,481
201234.89,840,024
201134.69,787,747
201034.39,758,256

Los Angeles County, California Age Group Breakdown (2024)

Age CohortPercentage
Under 55.1%
5–1715.5%
18–248.9%
25–3415.7%
35–5427.2%
55–6412.4%
65+15.2%

Dependency Ratios for Los Angeles County, California

Total Dependency Ratio:
55.6
Youth Dependency:
32.0
Old-Age Dependency:
23.6

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



Age & Gender FAQs for Los Angeles County, California

The median age in Los Angeles County, California is 38.2 years.

According to latest Census data, the total population of Los Angeles County, California is 9,808,667.

In Los Angeles County, California, seniors (ages 65+) make up 15.2% of the population, while children under 18 represent 15.5%.

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