Overview
9,283
Total Population
46.1
Median age
51.21%
Female population %
95.3:100
Gender ratio (M:F)
60-64 years
Largest age group
54.5
Total dependency ratio
White
Largest racial group
2,149
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Leonia's population is old compared to the rest of the country:
- The median age in Leonia is 46.1, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Leonia's population under 18 was 21.42%, compared to the 22.51% nationwide.
- Leonia's elderly or the senior population (over 65 age) was 18.17% as compared to 16.04% nationwide.
- Of the total population in Leonia, 17.10% were under the age of 15, 16.48% aged 15 to 29, 48.25% aged 30 to 64, 16.33% aged 65 to 84, and 1.84% were 85 years of age and older.

Read more about Leonia, NJ population by age ➔
Gender
There are 225 more females than males in Leonia:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.21% females and 48.79% males in Leonia, NJ.
- The Leonia, NJ gender ratio is 95.3:100 i.e. 95.3 men to 100 women (0.953).
- For male population, the largest age group is 55-59 years with a population of 388.
- For the female population, the largest age group is 60-64 years with a population of 542.

Read more about Leonia, NJ population by gender ➔
Race / Ethnicity
Leonia's population has become increasingly diverse:
- Racial distribution of Leonia population: 41.85% are White, 3.61% are Black or African American, 0.11% are American Indian and Alaska Native, 38.58% are Asian, 0.27% are Native Hawaiian and other Pacific Islander, 4.03% are some other race and 11.56% are multiracial.
- Leonia's racial breakdown clearly shows that there is no majority of any race in the borough.
- By ethnicity, 2,149 is Hispanic or Latino (of any race), and 7,134 (76.85% of the total population) is Non-Hispanic.
- The largest racial group in Leonia is White with a population of 3,885 (41.85% of the total population).

Read more about Leonia, NJ population by race ➔
Year by year
Leonia's population has already reached its peak and is showing a trend of decline:
- The peak population was 9,295 in the year 2020
- From 2000 to 2010, Leonia's population increased by 13 (0.15%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Leonia's population increased by 341 (3.81%), 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, Leonia's population was lowest in year 2008 at 8,654.

Read more about Leonia, NJ 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)