Naugatuck, Connecticut demographics

Naugatuck, CT demographics: median age 39.8; 32.2% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Naugatuck borough, Connecticut · Incorporated borough · GEOID 0949880. The survey estimates a population of 31,800 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Naugatuck is 39.8 years, with a 90% margin of error of 2.4 years. There are 12,736 households (±510). 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	39.8 ±2.4	41.1 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 31,800
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Under 18	6,338 ±744	19.9% ±2.3 pp	20.2%	22.0%
18–34	7,291 ±826	22.9% ±2.6 pp	21.9%	22.8%
35–64	13,204 ±1,034	41.5% ±3.3 pp	39.4%	38.0%
65 and older	4,967 ±629	15.6% ±2.0 pp	18.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 31,800
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Male	15,442 ±645	48.6% ±2.0 pp	49.1%	49.5%
Female	16,358 ±642	51.4% ±2.0 pp	50.9%	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: 31,800
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
White alone	20,703 ±1,363	65.1% ±4.3 pp	65.1%	61.0%
Black or African American alone	4,044 ±1,083	12.7% ±3.4 pp	10.6%	12.2%
American Indian and Alaska Native alone	10 ±15 · low precision	0.0% ±0.0 pp · low precision	0.3%	0.9%
Asian alone	1,166 ±498	3.7% ±1.6 pp	4.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±29 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	1,509 ±448	4.7% ±1.4 pp	7.7%	7.1%
Two or more races	4,368 ±1,030	13.7% ±3.2 pp	11.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 31,800
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Not Hispanic or Latino	26,274 ±919	82.6% ±2.9 pp	81.7%	80.7%
Hispanic or Latino	5,526 ±913	17.4% ±2.9 pp	18.3%	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: 12,736
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Married-couple family	5,942 ±473	46.7% ±3.2 pp	46.6%	46.9%
Other family: male householder, no spouse present	604 ±204	4.7% ±1.6 pp	5.0%	5.1%
Other family: female householder, no spouse present	1,421 ±312	11.2% ±2.4 pp	12.7%	12.2%
Nonfamily: householder living alone	3,912 ±492	30.7% ±3.7 pp	29.1%	28.7%
Nonfamily: householder not living alone	857 ±319	6.7% ±2.5 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 12,736
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Households with people under 18	3,734 ±354	29.3% ±2.5 pp	28.6%	29.5%
Households without people under 18	9,002 ±689	70.7% ±4.6 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 12,736
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
One-person nonfamily households	3,912 ±492	30.7% ±3.7 pp	29.1%	28.7%
Two-person households	4,125 ±563	32.4% ±4.2 pp	33.4%	33.8%
Three-person households	1,812 ±362	14.2% ±2.8 pp	16.4%	15.3%
Four-person households	1,875 ±356	14.7% ±2.7 pp	13.3%	12.6%
Five-person households	534 ±155	4.2% ±1.2 pp	5.4%	5.9%
Six-person households	267 ±201 · low precision	2.1% ±1.6 pp · low precision	1.7%	2.2%
Seven or more people	211 ±110 · low precision	1.7% ±0.9 pp · low precision	0.9%	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: 31,800
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Native	26,311 ±954	82.7% ±3.0 pp	84.3%	85.9%
Foreign born	5,489 ±957	17.3% ±3.0 pp	15.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 30,492
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
English only	23,620 ±1,205	77.5% ±3.8 pp	76.6%	77.7%
Spanish	3,125 ±755	10.2% ±2.5 pp	12.8%	13.6%
French, Haitian, or Cajun	377 ±167	1.2% ±0.5 pp	1.2%	0.7%
German or other West Germanic	42 ±48 · low precision	0.1% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	332 ±267 · low precision	1.1% ±0.9 pp · low precision	1.5%	0.7%
Other Indo-European	2,077 ±654	6.8% ±2.1 pp	4.0%	2.0%
Korean	25 ±42 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	101 ±119 · low precision	0.3% ±0.4 pp · low precision	0.9%	1.1%
Vietnamese	91 ±128 · low precision	0.3% ±0.4 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	75 ±80 · low precision	0.2% ±0.3 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	408 ±256 · low precision	1.3% ±0.8 pp · low precision	0.9%	1.1%
Arabic	85 ±149 · low precision	0.3% ±0.5 pp · low precision	0.4%	0.5%
Other and unspecified	134 ±98 · low precision	0.4% ±0.3 pp · low precision	0.7%	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: 22,383
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Less than high school graduate	2,016 ±554	9.0% ±2.5 pp	8.5%	10.4%
High school graduate or equivalency	6,803 ±718	30.4% ±3.0 pp	25.3%	26.0%
Some college, no degree	4,377 ±717	19.6% ±3.1 pp	16.1%	19.1%
Associate’s degree	1,988 ±384	8.9% ±1.7 pp	7.6%	8.8%
Bachelor’s degree	3,697 ±639	16.5% ±2.8 pp	23.3%	21.6%
Graduate or professional degree	3,502 ±604	15.6% ±2.6 pp	19.2%	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: 31,307
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Same house	26,966 ±1,193	86.1% ±3.7 pp	89.2%	87.7%
Moved within same county	2,198 ±807	7.0% ±2.6 pp	5.6%	6.3%
Moved from a different county in the same state	1,027 ±315	3.3% ±1.0 pp	2.0%	3.1%
Moved from a different state	845 ±711 · low precision	2.7% ±2.3 pp · low precision	2.6%	2.3%
Moved from abroad	271 ±251 · low precision	0.9% ±0.8 pp · low precision	0.7%	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

6.0% of Naugatuck residents (±1.5 percentage points) had no health insurance coverage when surveyed, compared with 5.4% in Connecticut and 8.4% nationally. 91.6% 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	Naugatuck	Connecticut	U.S.	Compared with Connecticut
People without health insurance Civilian noninstitutionalized population	6.0% ±1.5 pp	5.4%	8.4%	Not statistically different
Households with a broadband subscription Households	91.6% ±1.4 pp	92.2%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.3% ±1.1 pp	4.7%	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 Naugatuck . 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 Naugatuck housing and cost context or return to the city profile.