Suffolk County, New York Age & Gender Distribution (2024)
Population distribution by age and gender for Suffolk County, New York
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

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

Figure 2: Population distribution by age and gender for 2024.
Suffolk County, New York Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 41.7 | 1,530,146 |
| 2023 | 41.7 | 1,525,680 |
| 2022 | 41.7 | 1,524,486 |
| 2021 | 41.7 | 1,522,998 |
| 2020 | 41.7 | 1,481,364 |
| 2019 | 41.5 | 1,483,832 |
| 2018 | 41.3 | 1,487,901 |
| 2017 | 41.0 | 1,497,595 |
| 2016 | 40.9 | 1,498,130 |
| 2015 | 40.6 | 1,501,373 |
| 2014 | 40.3 | 1,500,373 |
| 2013 | 40.1 | 1,495,803 |
| 2012 | 39.8 | 1,492,360 |
| 2011 | 39.6 | 1,487,177 |
| 2010 | 39.2 | 1,482,548 |
Suffolk County, New York Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.3% |
| 5–17 | 15.5% |
| 18–24 | 8.9% |
| 25–34 | 12.2% |
| 35–54 | 25.2% |
| 55–64 | 14.9% |
| 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.