US ZIP Code 91739 Age & Gender Statistics (2024)

Total Population

41,673

Median Age

37.6

Male Median

35.3

Female Median

39.5

US ZIP Code 91739 Population Growth

Population trends in
Figure 1: Annual population growth trend for (2021–2024).

US ZIP Code 91739 Demographic Trend

Since 2021, the population of has changed by +0.6%%.

+0.6%% Growth

US ZIP Code 91739 Age & Gender Pyramid

Population pyramid for

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


US ZIP Code 91739 Historical Population Data

YearMedian AgePopulation
202437.641,673
202337.241,722
202236.241,319
202135.141,427

US ZIP Code 91739 Age Group Breakdown (2024)

Age CohortPercentage
Under 55.5%
5–1719.6%
18–247.4%
25–3414.6%
35–5430.4%
55–6413.1%
65+9.4%

Dependency Ratios for US ZIP Code 91739

Total Dependency Ratio:
52.7
Youth Dependency:
38.4
Old-Age Dependency:
14.4

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



Age & Gender FAQs for US ZIP Code 91739

The median age in US ZIP Code 91739 is 37.6 years.

According to latest Census data, the total population of US ZIP Code 91739 is 41,673.

In US ZIP Code 91739, seniors (ages 65+) make up 9.4% of the population, while children under 18 represent 19.6%.

Based on historical data since 2021, the population in US ZIP Code 91739 is aging.
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