Norwich, Connecticut demographics

Norwich, CT demographics: median age 38.5; 23.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Norwich city, Connecticut · Incorporated city · GEOID 0956200. The survey estimates a population of 39,973 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Norwich is 38.5 years, with a 90% margin of error of 1.7 years. There are 17,092 households (±554). 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	38.5 ±1.7	41.1 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 39,973
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Under 18	8,362 ±738	20.9% ±1.8 pp	20.2%	22.0%
18–34	9,839 ±869	24.6% ±2.2 pp	21.9%	22.8%
35–64	14,998 ±976	37.5% ±2.4 pp	39.4%	38.0%
65 and older	6,774 ±690	16.9% ±1.7 pp	18.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 39,973
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Male	20,147 ±621	50.4% ±1.6 pp	49.1%	49.5%
Female	19,826 ±618	49.6% ±1.5 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: 39,973
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
White alone	24,159 ±1,355	60.4% ±3.4 pp	65.1%	61.0%
Black or African American alone	4,183 ±722	10.5% ±1.8 pp	10.6%	12.2%
American Indian and Alaska Native alone	471 ±303 · low precision	1.2% ±0.8 pp · low precision	0.3%	0.9%
Asian alone	2,775 ±686	6.9% ±1.7 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	3,083 ±874	7.7% ±2.2 pp	7.7%	7.1%
Two or more races	5,302 ±834	13.3% ±2.1 pp	11.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 39,973
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Not Hispanic or Latino	31,227 ±993	78.1% ±2.5 pp	81.7%	80.7%
Hispanic or Latino	8,746 ±990	21.9% ±2.5 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: 17,092
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Married-couple family	5,284 ±506	30.9% ±2.8 pp	46.6%	46.9%
Other family: male householder, no spouse present	1,312 ±330	7.7% ±1.9 pp	5.0%	5.1%
Other family: female householder, no spouse present	2,847 ±396	16.7% ±2.3 pp	12.7%	12.2%
Nonfamily: householder living alone	6,030 ±685	35.3% ±3.8 pp	29.1%	28.7%
Nonfamily: householder not living alone	1,619 ±297	9.5% ±1.7 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 17,092
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Households with people under 18	4,747 ±388	27.8% ±2.1 pp	28.6%	29.5%
Households without people under 18	12,345 ±699	72.2% ±3.4 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 17,092
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
One-person nonfamily households	6,030 ±685	35.3% ±3.8 pp	29.1%	28.7%
Two-person households	5,050 ±543	29.5% ±3.0 pp	33.4%	33.8%
Three-person households	2,752 ±502	16.1% ±2.9 pp	16.4%	15.3%
Four-person households	2,056 ±347	12.0% ±2.0 pp	13.3%	12.6%
Five-person households	822 ±258	4.8% ±1.5 pp	5.4%	5.9%
Six-person households	243 ±127 · low precision	1.4% ±0.7 pp · low precision	1.7%	2.2%
Seven or more people	139 ±89 · low precision	0.8% ±0.5 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: 39,973
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Native	34,545 ±730	86.4% ±1.8 pp	84.3%	85.9%
Foreign born	5,428 ±735	13.6% ±1.8 pp	15.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 37,844
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
English only	28,845 ±1,268	76.2% ±3.3 pp	76.6%	77.7%
Spanish	4,636 ±900	12.3% ±2.4 pp	12.8%	13.6%
French, Haitian, or Cajun	1,556 ±566	4.1% ±1.5 pp	1.2%	0.7%
German or other West Germanic	80 ±55 · low precision	0.2% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	48 ±49 · low precision	0.1% ±0.1 pp · low precision	1.5%	0.7%
Other Indo-European	497 ±312 · low precision	1.3% ±0.8 pp · low precision	4.0%	2.0%
Korean	0 ±29 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	1,433 ±565	3.8% ±1.5 pp	0.9%	1.1%
Vietnamese	13 ±20 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	245 ±190 · low precision	0.6% ±0.5 pp · low precision	0.3%	0.6%
Other Asian and Pacific Island	402 ±309 · low precision	1.1% ±0.8 pp · low precision	0.9%	1.1%
Arabic	52 ±65 · low precision	0.1% ±0.2 pp · low precision	0.4%	0.5%
Other and unspecified	37 ±35 · low precision	0.1% ±0.1 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: 27,674
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Less than high school graduate	3,467 ±585	12.5% ±2.1 pp	8.5%	10.4%
High school graduate or equivalency	9,721 ±961	35.1% ±3.4 pp	25.3%	26.0%
Some college, no degree	5,781 ±641	20.9% ±2.3 pp	16.1%	19.1%
Associate’s degree	2,300 ±449	8.3% ±1.6 pp	7.6%	8.8%
Bachelor’s degree	3,634 ±512	13.1% ±1.8 pp	23.3%	21.6%
Graduate or professional degree	2,771 ±472	10.0% ±1.7 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: 39,706
Category	Count ± MOE	Share ± MOE (pp)	Connecticut	U.S.
Same house	34,161 ±984	86.0% ±2.5 pp	89.2%	87.7%
Moved within same county	3,746 ±956	9.4% ±2.4 pp	5.6%	6.3%
Moved from a different county in the same state	750 ±258	1.9% ±0.6 pp	2.0%	3.1%
Moved from a different state	1,028 ±370	2.6% ±0.9 pp	2.6%	2.3%
Moved from abroad	21 ±36 · low precision	0.1% ±0.1 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

7.8% of Norwich residents (±1.5 percentage points) had no health insurance coverage when surveyed, compared with 5.4% in Connecticut and 8.4% nationally. 90.3% 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	Norwich	Connecticut	U.S.	Compared with Connecticut
People without health insurance Civilian noninstitutionalized population	7.8% ±1.5 pp	5.4%	8.4%	Higher
Households with a broadband subscription Households	90.3% ±1.6 pp	92.2%	91.0%	Lower
Veterans Civilian population age 18 and older	6.7% ±1.0 pp	4.7%	6.2%	Higher

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