US ZIP Code 61820 Age & Gender Distribution (2024)
Population distribution by age and gender for US ZIP Code 61820
US ZIP Code 61820 Age & Gender Statistics (2024)
Total Population
40,599
Median Age
21.9
Male Median
21.9
Female Median
21.8
US ZIP Code 61820 Population Growth

US ZIP Code 61820 Demographic Trend
Since 2021, the population of has changed by +5.3%%.
+5.3%% Growth
US ZIP Code 61820 Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
US ZIP Code 61820 Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 21.9 | 40,599 |
| 2023 | 22.2 | 38,481 |
| 2022 | 22.2 | 38,128 |
| 2021 | 22.4 | 38,553 |
US ZIP Code 61820 Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 2.8% |
| 5–17 | 6.1% |
| 18–24 | 56.9% |
| 25–34 | 13.9% |
| 35–54 | 11.1% |
| 55–64 | 4.9% |
| 65+ | 4.4% |
Dependency Ratios for US ZIP Code 61820
- Total Dependency Ratio:
- 15.3
- Youth Dependency:
- 10.2
- Old-Age Dependency:
- 5.1
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 61820
The median age in US ZIP Code 61820 is 21.9 years.
According to latest Census data, the total population of US ZIP Code 61820 is 40,599.
In US ZIP Code 61820, seniors (ages 65+) make up 4.4% of the population, while children under 18 represent 6.1%.
Based on historical data since 2021, the population in US ZIP Code 61820 has remained stable.