Suffolk County, New York Age & Gender Statistics (2024)

Total Population

1,530,146

Median Age

41.7

Male Median

40.4

Female Median

43.1

Suffolk County, New York Population Growth

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

Suffolk County, New York Demographic Trend

Since 2010, the population of has changed by +3.2%%.

+3.2%% Growth

Suffolk County, New York Age & Gender Pyramid

Population pyramid for

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


Suffolk County, New York Historical Population Data

YearMedian AgePopulation
202441.71,530,146
202341.71,525,680
202241.71,524,486
202141.71,522,998
202041.71,481,364
201941.51,483,832
201841.31,487,901
201741.01,497,595
201640.91,498,130
201540.61,501,373
201440.31,500,373
201340.11,495,803
201239.81,492,360
201139.61,487,177
201039.21,482,548

Suffolk County, New York Age Group Breakdown (2024)

Age CohortPercentage
Under 55.3%
5–1715.5%
18–248.9%
25–3412.2%
35–5425.2%
55–6414.9%
65+17.9%

Dependency Ratios for Suffolk County, New York

Total Dependency Ratio:
63.1
Youth Dependency:
33.9
Old-Age Dependency:
29.2

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Suffolk County, New York

The median age in Suffolk County, New York is 41.7 years.

According to latest Census data, the total population of Suffolk County, New York is 1,530,146.

In Suffolk County, New York, seniors (ages 65+) make up 17.9% of the population, while children under 18 represent 15.5%.

Based on historical data since 2010, the population in Suffolk County, New York is aging.
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