Mount Arlington, New Jersey demographics

Mount Arlington, NJ demographics: median age 48.1; 50.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Mount Arlington borough, New Jersey · Incorporated borough · GEOID 3448690. The survey estimates a population of 5,935 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Mount Arlington is 48.1 years, with a 90% margin of error of 4.2 years. There are 2,799 households (±161). 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	48.1 ±4.2	40.1 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 5,935
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Under 18	855 ±226	14.4% ±3.8 pp	21.8%	22.0%
18–34	1,197 ±262	20.2% ±4.4 pp	21.3%	22.8%
35–64	2,395 ±346	40.4% ±5.8 pp	39.7%	38.0%
65 and older	1,488 ±234	25.1% ±3.9 pp	17.2%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 5,935
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Male	2,590 ±187	43.6% ±3.1 pp	49.2%	49.5%
Female	3,345 ±187	56.4% ±3.1 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: 5,935
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
White alone	4,724 ±369	79.6% ±6.2 pp	54.0%	61.0%
Black or African American alone	329 ±217 · low precision	5.5% ±3.7 pp · low precision	12.8%	12.2%
American Indian and Alaska Native alone	0 ±20 · low precision	0.0% ±0.3 pp · low precision	0.6%	0.9%
Asian alone	214 ±177 · low precision	3.6% ±3.0 pp · low precision	10.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±20 · low precision	0.0% ±0.3 pp · low precision	0.0%	0.2%
Some other race alone	180 ±149 · low precision	3.0% ±2.5 pp · low precision	10.1%	7.1%
Two or more races	488 ±258 · low precision	8.2% ±4.3 pp · low precision	12.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 5,935
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Not Hispanic or Latino	5,078 ±304	85.6% ±5.1 pp	77.5%	80.7%
Hispanic or Latino	857 ±307	14.4% ±5.2 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: 2,799
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Married-couple family	1,150 ±131	41.1% ±4.0 pp	49.8%	46.9%
Other family: male householder, no spouse present	39 ±48 · low precision	1.4% ±1.7 pp · low precision	5.1%	5.1%
Other family: female householder, no spouse present	271 ±95	9.7% ±3.3 pp	12.9%	12.2%
Nonfamily: householder living alone	1,084 ±195	38.7% ±6.6 pp	26.4%	28.7%
Nonfamily: householder not living alone	255 ±114	9.1% ±4.0 pp	5.8%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 2,799
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Households with people under 18	494 ±89	17.6% ±3.0 pp	31.2%	29.5%
Households without people under 18	2,305 ±192	82.4% ±5.0 pp	68.8%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 2,799
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
One-person nonfamily households	1,084 ±195	38.7% ±6.6 pp	26.4%	28.7%
Two-person households	972 ±201	34.7% ±6.9 pp	31.1%	33.8%
Three-person households	365 ±114	13.0% ±4.0 pp	17.1%	15.3%
Four-person households	236 ±95	8.4% ±3.4 pp	15.2%	12.6%
Five-person households	142 ±64	5.1% ±2.3 pp	6.3%	5.9%
Six-person households	0 ±28 · low precision	0.0% ±1.0 pp · low precision	2.3%	2.2%
Seven or more people	0 ±28 · low precision	0.0% ±1.0 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: 5,935
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Native	5,039 ±293	84.9% ±4.9 pp	76.1%	85.9%
Foreign born	896 ±291	15.1% ±4.9 pp	23.9%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 5,655
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
English only	4,423 ±408	78.2% ±6.6 pp	66.9%	77.7%
Spanish	492 ±258 · low precision	8.7% ±4.6 pp · low precision	17.2%	13.6%
French, Haitian, or Cajun	0 ±20 · low precision	0.0% ±0.4 pp · low precision	1.1%	0.7%
German or other West Germanic	0 ±20 · low precision	0.0% ±0.4 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	162 ±107 · low precision	2.9% ±1.9 pp · low precision	1.7%	0.7%
Other Indo-European	235 ±143 · low precision	4.2% ±2.5 pp · low precision	5.6%	2.0%
Korean	0 ±20 · low precision	0.0% ±0.4 pp · low precision	0.9%	0.3%
Chinese, including Mandarin and Cantonese	0 ±20 · low precision	0.0% ±0.4 pp · low precision	1.5%	1.1%
Vietnamese	0 ±20 · low precision	0.0% ±0.4 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	11 ±19 · low precision	0.2% ±0.3 pp · low precision	0.9%	0.6%
Other Asian and Pacific Island	52 ±53 · low precision	0.9% ±0.9 pp · low precision	1.6%	1.1%
Arabic	147 ±167 · low precision	2.6% ±3.0 pp · low precision	0.9%	0.5%
Other and unspecified	133 ±180 · low precision	2.4% ±3.2 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: 4,648
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Less than high school graduate	65 ±82 · low precision	1.4% ±1.8 pp · low precision	9.3%	10.4%
High school graduate or equivalency	910 ±262	19.6% ±5.6 pp	25.3%	26.0%
Some college, no degree	893 ±224	19.2% ±4.8 pp	15.0%	19.1%
Associate’s degree	415 ±156	8.9% ±3.3 pp	6.7%	8.8%
Bachelor’s degree	1,556 ±201	33.5% ±4.2 pp	26.1%	21.6%
Graduate or professional degree	809 ±210	17.4% ±4.5 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: 5,896
Category	Count ± MOE	Share ± MOE (pp)	New Jersey	U.S.
Same house	5,310 ±190	90.1% ±3.1 pp	90.4%	87.7%
Moved within same county	325 ±166 · low precision	5.5% ±2.8 pp · low precision	4.4%	6.3%
Moved from a different county in the same state	140 ±83 · low precision	2.4% ±1.4 pp · low precision	2.5%	3.1%
Moved from a different state	121 ±99 · low precision	2.1% ±1.7 pp · low precision	1.8%	2.3%
Moved from abroad	0 ±20 · low precision	0.0% ±0.3 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

2.3% of Mount Arlington residents (±1.7 percentage points) had no health insurance coverage when surveyed, compared with 7.5% in New Jersey and 8.4% nationally. 94.0% 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	Mount Arlington	New Jersey	U.S.	Compared with New Jersey
People without health insurance Civilian noninstitutionalized population	2.3% ±1.7 pp · low precision	7.5%	8.4%	Lower
Households with a broadband subscription Households	94.0% ±3.7 pp	92.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.1% ±1.7 pp	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 Mount Arlington . 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 Mount Arlington housing and cost context or return to the city profile.