Sussex County, Delaware Age & Gender Distribution (2024)
Population distribution by age and gender for Sussex County, Delaware
Sussex County, Delaware Age & Gender Statistics (2024)
Total Population
255,626
Median Age
51.9
Male Median
50.1
Female Median
53.6
Sussex County, Delaware Population Growth

Sussex County, Delaware Demographic Trend
Since 2010, the population of has changed by +33.9%%.
+33.9%% Growth
Sussex County, Delaware Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Sussex County, Delaware Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 51.9 | 255,626 |
| 2023 | 51.4 | 247,799 |
| 2022 | 51.3 | 240,668 |
| 2021 | 50.7 | 234,045 |
| 2020 | 50.3 | 230,249 |
| 2019 | 49.6 | 224,384 |
| 2018 | 49.0 | 219,540 |
| 2017 | 48.3 | 215,551 |
| 2016 | 47.6 | 211,224 |
| 2015 | 47.0 | 207,302 |
| 2014 | 46.5 | 203,737 |
| 2013 | 45.9 | 200,632 |
| 2012 | 45.4 | 197,681 |
| 2011 | 45.1 | 194,442 |
| 2010 | 44.6 | 190,846 |
Sussex County, Delaware Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.7% |
| 5–17 | 13.3% |
| 18–24 | 6.1% |
| 25–34 | 9.5% |
| 35–54 | 19.7% |
| 55–64 | 16.3% |
| 65+ | 30.2% |
Dependency Ratios for Sussex County, Delaware
- Total Dependency Ratio:
- 93.5
- Youth Dependency:
- 35.0
- Old-Age Dependency:
- 58.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Sussex County, Delaware
The median age in Sussex County, Delaware is 51.9 years.
According to latest Census data, the total population of Sussex County, Delaware is 255,626.
In Sussex County, Delaware, seniors (ages 65+) make up 30.2% of the population, while children under 18 represent 13.3%.
Based on historical data since 2010, the population in Sussex County, Delaware is aging.