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

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

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

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Somerset County, New Jersey Historical Population Data

YearMedian AgePopulation
202441.8349,846
202341.9346,203
202242.0344,978
202141.8343,950
202041.8330,151
201941.7329,838
201841.6330,176
201741.3333,316
201641.1331,686
201540.8330,604
201440.7328,704
201340.4326,207
201240.2323,650
201139.9321,304
201039.7319,347

Somerset County, New Jersey Age Group Breakdown (2024)

Age CohortPercentage
Under 54.9%
5–1716.2%
18–248.0%
25–3411.5%
35–5427.6%
55–6414.8%
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.
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