Leonia, New Jersey demographics

Leonia, NJ demographics: median age 45.9; 61.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Leonia borough, New Jersey · Incorporated borough · GEOID 3440020. The survey estimates a population of 9,336 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Leonia is 45.9 years, with a 90% margin of error of 3.4 years. There are 3,345 households (±341). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	45.9 ±3.4	40.1 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 9,336
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Under 18	1,886 ±375	20.2% ±4.0 pp	21.8%	22.0%
18–34	1,614 ±303	17.3% ±3.2 pp	21.3%	22.8%
35–64	4,181 ±481	44.8% ±5.1 pp	39.7%	38.0%
65 and older	1,655 ±306	17.7% ±3.3 pp	17.2%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 9,336
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Male	4,589 ±468	49.2% ±5.0 pp	49.2%	49.5%
Female	4,747 ±470	50.8% ±5.0 pp	50.8%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 9,336
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
White alone	3,161 ±550	33.9% ±5.9 pp	54.0%	61.0%
Black or African American alone	298 ±176 · low precision	3.2% ±1.9 pp · low precision	12.8%	12.2%
American Indian and Alaska Native alone	2 ±5 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.9%
Asian alone	3,501 ±550	37.5% ±5.9 pp	10.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±20 · low precision	0.0% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	526 ±278 · low precision	5.6% ±3.0 pp · low precision	10.1%	7.1%
Two or more races	1,848 ±733	19.8% ±7.9 pp	12.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 9,336
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Not Hispanic or Latino	6,974 ±805	74.7% ±8.6 pp	77.5%	80.7%
Hispanic or Latino	2,362 ±806	25.3% ±8.6 pp	22.5%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 3,345
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Married-couple family	2,031 ±214	60.7% ±1.6 pp	49.8%	46.9%
Other family: male householder, no spouse present	167 ±95 · low precision	5.0% ±2.8 pp · low precision	5.1%	5.1%
Other family: female householder, no spouse present	287 ±109	8.6% ±3.1 pp	12.9%	12.2%
Nonfamily: householder living alone	764 ±242	22.8% ±6.8 pp	26.4%	28.7%
Nonfamily: householder not living alone	96 ±69 · low precision	2.9% ±2.0 pp · low precision	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 3,345
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Households with people under 18	1,130 ±149	33.8% ±2.8 pp	31.2%	29.5%
Households without people under 18	2,215 ±331	66.2% ±7.2 pp	68.8%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 3,345
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
One-person nonfamily households	764 ±242	22.8% ±6.8 pp	26.4%	28.7%
Two-person households	913 ±178	27.3% ±4.5 pp	31.1%	33.8%
Three-person households	735 ±185	22.0% ±5.1 pp	17.1%	15.3%
Four-person households	703 ±159	21.0% ±4.3 pp	15.2%	12.6%
Five-person households	203 ±83	6.1% ±2.4 pp	6.3%	5.9%
Six-person households	19 ±30 · low precision	0.6% ±0.9 pp · low precision	2.3%	2.2%
Seven or more people	8 ±23 · low precision	0.2% ±0.7 pp · low precision	1.6%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 9,336
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Native	5,513 ±419	59.1% ±4.5 pp	76.1%	85.9%
Foreign born	3,823 ±419	40.9% ±4.5 pp	23.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 8,889
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
English only	4,310 ±513	48.5% ±5.6 pp	66.9%	77.7%
Spanish	1,266 ±355	14.2% ±4.0 pp	17.2%	13.6%
French, Haitian, or Cajun	0 ±20 · low precision	0.0% ±0.2 pp · low precision	1.1%	0.7%
German or other West Germanic	33 ±38 · low precision	0.4% ±0.4 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	164 ±150 · low precision	1.8% ±1.7 pp · low precision	1.7%	0.7%
Other Indo-European	295 ±141	3.3% ±1.6 pp	5.6%	2.0%
Korean	2,156 ±469	24.3% ±5.2 pp	0.9%	0.3%
Chinese, including Mandarin and Cantonese	368 ±172	4.1% ±1.9 pp	1.5%	1.1%
Vietnamese	7 ±10 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	37 ±42 · low precision	0.4% ±0.5 pp · low precision	0.9%	0.6%
Other Asian and Pacific Island	120 ±100 · low precision	1.3% ±1.1 pp · low precision	1.6%	1.1%
Arabic	0 ±20 · low precision	0.0% ±0.2 pp · low precision	0.9%	0.5%
Other and unspecified	133 ±123 · low precision	1.5% ±1.4 pp · low precision	1.1%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 6,771
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Less than high school graduate	485 ±259 · low precision	7.2% ±3.8 pp · low precision	9.3%	10.4%
High school graduate or equivalency	774 ±238	11.4% ±3.5 pp	25.3%	26.0%
Some college, no degree	752 ±178	11.1% ±2.6 pp	15.0%	19.1%
Associate’s degree	629 ±198	9.3% ±2.9 pp	6.7%	8.8%
Bachelor’s degree	2,552 ±330	37.7% ±4.5 pp	26.1%	21.6%
Graduate or professional degree	1,579 ±289	23.3% ±4.1 pp	17.6%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 9,314
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Same house	8,715 ±276	93.6% ±2.9 pp	90.4%	87.7%
Moved within same county	447 ±262 · low precision	4.8% ±2.8 pp · low precision	4.4%	6.3%
Moved from a different county in the same state	45 ±40 · low precision	0.5% ±0.4 pp · low precision	2.5%	3.1%
Moved from a different state	107 ±86 · low precision	1.1% ±0.9 pp · low precision	1.8%	2.3%
Moved from abroad	0 ±20 · low precision	0.0% ±0.2 pp · low precision	0.8%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

4.7% of Leonia residents (±1.6 percentage points) had no health insurance coverage when surveyed, compared with 7.5% in New Jersey and 8.4% nationally. 98.2% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Leonia	New Jersey	U.S.	Compared with New Jersey
People without health insurance Civilian noninstitutionalized population	4.7% ±1.6 pp	7.5%	8.4%	Lower
Households with a broadband subscription Households	98.2% ±1.3 pp	92.8%	91.0%	Higher
Veterans Civilian population age 18 and older	3.3% ±1.7 pp · low precision	3.7%	6.2%	Not statistically different

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Leonia . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Leonia housing and cost context or return to the city profile.