Overview
448
Total Population
45.5
Median age
49.78%
Female population %
100.9:100
Gender ratio (M:F)
55-59 years
Largest age group
41.3
Total dependency ratio
White
Largest racial group
2
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Port Jefferson's population is old compared to the rest of the country:
- The median age in Port Jefferson is 45.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Port Jefferson's population under 18 was 16.52%, compared to the 22.51% nationwide.
- Port Jefferson's elderly or the senior population (over 65 age) was 14.51% as compared to 16.04% nationwide.
- Of the total population in Port Jefferson, 14.73% were under the age of 15, 13.84% aged 15 to 29, 56.92% aged 30 to 64, 11.83% aged 65 to 84, and 2.68% were 85 years of age and older.

Read more about Port Jefferson, OH population by age ➔
Gender
There are 2 less females than males in Port Jefferson:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.78% females and 50.22% males in Port Jefferson, OH.
- The Port Jefferson, OH gender ratio is 100.9:100 i.e. 100.9 men to 100 women (1.009).
- For male population, the largest age group is 55-59 years with a population of 48.
- For the female population, the largest age group is 35-39 years with a population of 28.

Read more about Port Jefferson, OH population by gender ➔
Race / Ethnicity
Port Jefferson's population is moderately diverse:
- Racial distribution of Port Jefferson population: 97.99% are White, 0.67% are Asian and 1.34% are multiracial.
- Port Jefferson's racial breakdown clearly shows that there is an absolute majority of White population in the village.
- By ethnicity, 2 is Hispanic or Latino (of any race), and 446 (99.55% of the total population) is Non-Hispanic.
- The largest racial group in Port Jefferson is White with a population of 439 (97.99% of the total population).

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Year by year
Port Jefferson's population has already reached its peak and is showing a trend of decline:
- The peak population was 368 in the year 2010
- From 2000 to 2010, Port Jefferson's population increased by 21 (6.05%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Port Jefferson's population decreased by 60 (16.30%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
- Between the year 2000 and 2022, Port Jefferson's population was lowest in year 2022 at 304.

Read more about Port Jefferson, OH population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)