Norwalk, Connecticut demographics

Norwalk, CT demographics: median age 40.6; 44.8% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Norwalk city, Connecticut · Incorporated city · GEOID 0955990. The survey estimates a population of 92,187 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Norwalk is 40.6 years, with a 90% margin of error of 1.0 years. There are 36,011 households (±779). 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	40.6 ±1.0	41.1 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 92,187
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Under 18	17,349 ±1,116	18.8% ±1.2 pp	20.2%	22.0%
18–34	21,436 ±1,257	23.3% ±1.4 pp	21.9%	22.8%
35–64	37,770 ±1,573	41.0% ±1.7 pp	39.4%	38.0%
65 and older	15,632 ±948	17.0% ±1.0 pp	18.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 92,187
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Male	45,785 ±997	49.7% ±1.1 pp	49.1%	49.5%
Female	46,402 ±993	50.3% ±1.1 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: 92,187
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
White alone	42,279 ±2,176	45.9% ±2.4 pp	65.1%	61.0%
Black or African American alone	16,182 ±1,925	17.6% ±2.1 pp	10.6%	12.2%
American Indian and Alaska Native alone	529 ±280 · low precision	0.6% ±0.3 pp · low precision	0.3%	0.9%
Asian alone	4,033 ±772	4.4% ±0.8 pp	4.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±32 · low precision	0.0% ±0.0 pp · low precision	0.0%	0.2%
Some other race alone	13,066 ±2,442	14.2% ±2.6 pp	7.7%	7.1%
Two or more races	16,098 ±1,616	17.5% ±1.8 pp	11.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 92,187
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Not Hispanic or Latino	62,718 ±1,875	68.0% ±2.0 pp	81.7%	80.7%
Hispanic or Latino	29,469 ±1,882	32.0% ±2.0 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: 36,011
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Married-couple family	16,171 ±824	44.9% ±2.1 pp	46.6%	46.9%
Other family: male householder, no spouse present	1,963 ±424	5.5% ±1.2 pp	5.0%	5.1%
Other family: female householder, no spouse present	5,030 ±662	14.0% ±1.8 pp	12.7%	12.2%
Nonfamily: householder living alone	10,517 ±898	29.2% ±2.4 pp	29.1%	28.7%
Nonfamily: householder not living alone	2,330 ±383	6.5% ±1.1 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 36,011
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Households with people under 18	9,933 ±678	27.6% ±1.8 pp	28.6%	29.5%
Households without people under 18	26,078 ±995	72.4% ±2.3 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 36,011
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
One-person nonfamily households	10,517 ±898	29.2% ±2.4 pp	29.1%	28.7%
Two-person households	11,705 ±908	32.5% ±2.4 pp	33.4%	33.8%
Three-person households	5,363 ±562	14.9% ±1.5 pp	16.4%	15.3%
Four-person households	5,218 ±586	14.5% ±1.6 pp	13.3%	12.6%
Five-person households	1,962 ±443	5.4% ±1.2 pp	5.4%	5.9%
Six-person households	834 ±283	2.3% ±0.8 pp	1.7%	2.2%
Seven or more people	412 ±129	1.1% ±0.4 pp	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: 92,187
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Native	64,557 ±1,878	70.0% ±2.0 pp	84.3%	85.9%
Foreign born	27,630 ±1,883	30.0% ±2.0 pp	15.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 87,262
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
English only	53,617 ±2,047	61.4% ±2.3 pp	76.6%	77.7%
Spanish	23,624 ±1,862	27.1% ±2.1 pp	12.8%	13.6%
French, Haitian, or Cajun	2,356 ±909	2.7% ±1.0 pp	1.2%	0.7%
German or other West Germanic	230 ±105	0.3% ±0.1 pp	0.3%	0.5%
Russian, Polish, or other Slavic	1,352 ±429	1.5% ±0.5 pp	1.5%	0.7%
Other Indo-European	3,829 ±731	4.4% ±0.8 pp	4.0%	2.0%
Korean	183 ±136 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	549 ±237	0.6% ±0.3 pp	0.9%	1.1%
Vietnamese	89 ±82 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	324 ±210 · low precision	0.4% ±0.2 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	315 ±182 · low precision	0.4% ±0.2 pp · low precision	0.9%	1.1%
Arabic	322 ±229 · low precision	0.4% ±0.3 pp · low precision	0.4%	0.5%
Other and unspecified	472 ±246 · low precision	0.5% ±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: 67,618
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Less than high school graduate	7,451 ±889	11.0% ±1.3 pp	8.5%	10.4%
High school graduate or equivalency	14,929 ±1,190	22.1% ±1.7 pp	25.3%	26.0%
Some college, no degree	10,492 ±905	15.5% ±1.3 pp	16.1%	19.1%
Associate’s degree	4,478 ±597	6.6% ±0.9 pp	7.6%	8.8%
Bachelor’s degree	17,413 ±843	25.8% ±1.2 pp	23.3%	21.6%
Graduate or professional degree	12,855 ±1,121	19.0% ±1.6 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: 90,963
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Same house	81,557 ±1,480	89.7% ±1.6 pp	89.2%	87.7%
Moved within same county	5,316 ±965	5.8% ±1.1 pp	5.6%	6.3%
Moved from a different county in the same state	856 ±293	0.9% ±0.3 pp	2.0%	3.1%
Moved from a different state	2,422 ±571	2.7% ±0.6 pp	2.6%	2.3%
Moved from abroad	812 ±381	0.9% ±0.4 pp	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

10.3% of Norwalk residents (±1.3 percentage points) had no health insurance coverage when surveyed, compared with 5.4% in Connecticut and 8.4% nationally. 92.8% 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	Norwalk	Connecticut	U.S.	Compared with Connecticut
People without health insurance Civilian noninstitutionalized population	10.3% ±1.3 pp	5.4%	8.4%	Higher
Households with a broadband subscription Households	92.8% ±1.0 pp	92.2%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	2.5% ±0.5 pp	4.7%	6.2%	Lower

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 Norwalk . 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 Norwalk housing and cost context or return to the city profile.