US ZIP Code 91739 Age & Gender Distribution (2024)
Population distribution by age and gender for US ZIP Code 91739
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

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

Figure 2: Population distribution by age and gender for 2024.
US ZIP Code 91739 Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 37.6 | 41,673 |
| 2023 | 37.2 | 41,722 |
| 2022 | 36.2 | 41,319 |
| 2021 | 35.1 | 41,427 |
US ZIP Code 91739 Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.5% |
| 5–17 | 19.6% |
| 18–24 | 7.4% |
| 25–34 | 14.6% |
| 35–54 | 30.4% |
| 55–64 | 13.1% |
| 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.