Somerset County, New Jersey Age & Gender Distribution (2024)
Population distribution by age and gender for Somerset County, New Jersey
Somerset County, New Jersey Age & Gender Statistics (2024)
Total Population
349,846
Median Age
41.8
Male Median
41.0
Female Median
42.9
Somerset County, New Jersey Population Growth

Somerset County, New Jersey Demographic Trend
Since 2010, the population of has changed by +9.6%%.
+9.6%% Growth
Somerset County, New Jersey Age & Gender Pyramid

Figure 2: Population distribution by age and gender for 2024.
Somerset County, New Jersey Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.8 | 349,846 |
| 2023 | 41.9 | 346,203 |
| 2022 | 42.0 | 344,978 |
| 2021 | 41.8 | 343,950 |
| 2020 | 41.8 | 330,151 |
| 2019 | 41.7 | 329,838 |
| 2018 | 41.6 | 330,176 |
| 2017 | 41.3 | 333,316 |
| 2016 | 41.1 | 331,686 |
| 2015 | 40.8 | 330,604 |
| 2014 | 40.7 | 328,704 |
| 2013 | 40.4 | 326,207 |
| 2012 | 40.2 | 323,650 |
| 2011 | 39.9 | 321,304 |
| 2010 | 39.7 | 319,347 |
Somerset County, New Jersey Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.9% |
| 5–17 | 16.2% |
| 18–24 | 8.0% |
| 25–34 | 11.5% |
| 35–54 | 27.6% |
| 55–64 | 14.8% |
| 65+ | 17.0% |
Dependency Ratios for Somerset County, New Jersey
- Total Dependency Ratio:
- 61.8
- Youth Dependency:
- 34.2
- Old-Age Dependency:
- 27.5
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Somerset County, New Jersey
The median age in Somerset County, New Jersey is 41.8 years.
According to latest Census data, the total population of Somerset County, New Jersey is 349,846.
In Somerset County, New Jersey, seniors (ages 65+) make up 17.0% of the population, while children under 18 represent 16.2%.
Based on historical data since 2010, the population in Somerset County, New Jersey is aging.