US ZIP Code 01581 Age & Gender Distribution (2024)
Population distribution by age and gender for US ZIP Code 01581
US ZIP Code 01581 Age & Gender Statistics (2024)
Total Population
21,944
Median Age
38.8
Male Median
40.1
Female Median
38.1
US ZIP Code 01581 Population Growth

US ZIP Code 01581 Demographic Trend
Since 2021, the population of has changed by +3.4%%.
+3.4%% Growth
US ZIP Code 01581 Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
US ZIP Code 01581 Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 38.8 | 21,944 |
| 2023 | 39.0 | 21,591 |
| 2022 | 38.9 | 21,360 |
| 2021 | 38.9 | 21,213 |
US ZIP Code 01581 Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.2% |
| 5–17 | 20.4% |
| 18–24 | 5.6% |
| 25–34 | 12.1% |
| 35–54 | 31.2% |
| 55–64 | 9.9% |
| 65+ | 15.5% |
Dependency Ratios for US ZIP Code 01581
- Total Dependency Ratio:
- 69.9
- Youth Dependency:
- 43.6
- Old-Age Dependency:
- 26.3
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 01581
The median age in US ZIP Code 01581 is 38.8 years.
According to latest Census data, the total population of US ZIP Code 01581 is 21,944.
In US ZIP Code 01581, seniors (ages 65+) make up 15.5% of the population, while children under 18 represent 20.4%.
Based on historical data since 2021, the population in US ZIP Code 01581 has remained stable.