US ZIP Code 91770 Age & Gender Distribution (2024)
Population distribution by age and gender for US ZIP Code 91770
US ZIP Code 91770 Age & Gender Statistics (2024)
Total Population
58,382
Median Age
44.5
Male Median
41.5
Female Median
48.1
US ZIP Code 91770 Population Growth

US ZIP Code 91770 Demographic Trend
Since 2021, the population of has changed by -2.2%%.
-2.2%% Growth
US ZIP Code 91770 Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
US ZIP Code 91770 Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.5 | 58,382 |
| 2023 | 44.6 | 58,893 |
| 2022 | 43.2 | 59,410 |
| 2021 | 42.1 | 59,685 |
US ZIP Code 91770 Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 3.9% |
| 5–17 | 13.2% |
| 18–24 | 7.1% |
| 25–34 | 12.8% |
| 35–54 | 27.5% |
| 55–64 | 14.8% |
| 65+ | 20.7% |
Dependency Ratios for US ZIP Code 91770
- Total Dependency Ratio:
- 60.9
- Youth Dependency:
- 27.5
- Old-Age Dependency:
- 33.3
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 91770
The median age in US ZIP Code 91770 is 44.5 years.
According to latest Census data, the total population of US ZIP Code 91770 is 58,382.
In US ZIP Code 91770, seniors (ages 65+) make up 20.7% of the population, while children under 18 represent 13.2%.
Based on historical data since 2021, the population in US ZIP Code 91770 is aging.