New Castle County, Delaware Age & Gender Distribution (2024)
Population distribution by age and gender for New Castle County, Delaware
New Castle County, Delaware Age & Gender Statistics (2024)
Total Population
577,961
Median Age
39.3
Male Median
38.2
Female Median
40.6
New Castle County, Delaware Population Growth
New Castle County, Delaware Demographic Trend
Since 2010, the population of has changed by +8.3%%.
+8.3%% Growth
New Castle County, Delaware Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
New Castle County, Delaware Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 39.3 | 577,961 |
| 2023 | 39.2 | 573,030 |
| 2022 | 39.0 | 570,567 |
| 2021 | 38.8 | 567,769 |
| 2020 | 38.7 | 558,306 |
| 2019 | 38.4 | 556,165 |
| 2018 | 38.1 | 555,133 |
| 2017 | 37.8 | 555,036 |
| 2016 | 37.6 | 551,997 |
| 2015 | 37.5 | 549,643 |
| 2014 | 37.3 | 545,846 |
| 2013 | 37.2 | 542,784 |
| 2012 | 37.0 | 539,665 |
| 2011 | 37.0 | 536,478 |
| 2010 | 36.8 | 533,514 |
New Castle County, Delaware Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.5% |
| 5–17 | 15.8% |
| 18–24 | 9.1% |
| 25–34 | 13.8% |
| 35–54 | 25.5% |
| 55–64 | 13.4% |
| 65+ | 17.1% |
Dependency Ratios for New Castle County, Delaware
- Total Dependency Ratio:
- 62.0
- Youth Dependency:
- 34.4
- Old-Age Dependency:
- 27.6
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for New Castle County, Delaware
The median age in New Castle County, Delaware is 39.3 years.
According to latest Census data, the total population of New Castle County, Delaware is 577,961.
In New Castle County, Delaware, seniors (ages 65+) make up 17.1% of the population, while children under 18 represent 15.8%.
Based on historical data since 2010, the population in New Castle County, Delaware is aging.