US ZIP Code 20721 Age & Gender Distribution (2024)
Population distribution by age and gender for US ZIP Code 20721
US ZIP Code 20721 Age & Gender Statistics (2024)
Total Population
31,032
Median Age
48.4
Male Median
47.0
Female Median
50.1
US ZIP Code 20721 Population Growth

US ZIP Code 20721 Demographic Trend
Since 2021, the population of has changed by +0.8%%.
+0.8%% Growth
US ZIP Code 20721 Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
US ZIP Code 20721 Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 48.4 | 31,032 |
| 2023 | 48.1 | 30,342 |
| 2022 | 47.2 | 30,785 |
| 2021 | 46.4 | 30,771 |
US ZIP Code 20721 Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 3.9% |
| 5–17 | 14.4% |
| 18–24 | 6.2% |
| 25–34 | 8.3% |
| 35–54 | 27.7% |
| 55–64 | 17.4% |
| 65+ | 22.2% |
Dependency Ratios for US ZIP Code 20721
- Total Dependency Ratio:
- 68.0
- Youth Dependency:
- 30.8
- Old-Age Dependency:
- 37.2
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 20721
The median age in US ZIP Code 20721 is 48.4 years.
According to latest Census data, the total population of US ZIP Code 20721 is 31,032.
In US ZIP Code 20721, seniors (ages 65+) make up 22.2% of the population, while children under 18 represent 14.4%.
Based on historical data since 2021, the population in US ZIP Code 20721 is aging.