Winthrop Town, Massachusetts demographics

Winthrop Town, MA demographics: median age 43.0; 45.6% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Winthrop Town city, Massachusetts · Incorporated city · GEOID 2581005. The survey estimates a population of 18,759 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Winthrop Town is 43.0 years, with a 90% margin of error of 1.6 years. There are 7,899 households (±429). 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	43.0 ±1.6	40.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 18,759
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Under 18	3,694 ±457	19.7% ±2.4 pp	19.4%	22.0%
18–34	3,242 ±465	17.3% ±2.5 pp	23.9%	22.8%
35–64	8,192 ±626	43.7% ±3.3 pp	38.9%	38.0%
65 and older	3,631 ±398	19.4% ±2.1 pp	17.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 18,759
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Male	8,461 ±383	45.1% ±2.0 pp	48.9%	49.5%
Female	10,298 ±377	54.9% ±2.0 pp	51.1%	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: 18,759
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
White alone	14,690 ±879	78.3% ±4.7 pp	68.6%	61.0%
Black or African American alone	638 ±405 · low precision	3.4% ±2.2 pp · low precision	6.8%	12.2%
American Indian and Alaska Native alone	293 ±245 · low precision	1.6% ±1.3 pp · low precision	0.2%	0.9%
Asian alone	268 ±208 · low precision	1.4% ±1.1 pp · low precision	7.3%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±21 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	1,115 ±471	5.9% ±2.5 pp	5.8%	7.1%
Two or more races	1,755 ±495	9.4% ±2.6 pp	11.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 18,759
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Not Hispanic or Latino	15,372 ±785	81.9% ±4.2 pp	86.7%	80.7%
Hispanic or Latino	3,387 ±783	18.1% ±4.2 pp	13.3%	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: 7,899
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Married-couple family	3,142 ±250	39.8% ±2.3 pp	45.9%	46.9%
Other family: male householder, no spouse present	470 ±147	6.0% ±1.8 pp	4.7%	5.1%
Other family: female householder, no spouse present	847 ±186	10.7% ±2.3 pp	11.9%	12.2%
Nonfamily: householder living alone	2,768 ±437	35.0% ±5.2 pp	28.8%	28.7%
Nonfamily: householder not living alone	672 ±202	8.5% ±2.5 pp	8.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 7,899
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Households with people under 18	2,072 ±226	26.2% ±2.5 pp	27.9%	29.5%
Households without people under 18	5,827 ±523	73.8% ±5.3 pp	72.1%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 7,899
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
One-person nonfamily households	2,768 ±437	35.0% ±5.2 pp	28.8%	28.7%
Two-person households	2,134 ±296	27.0% ±3.4 pp	33.3%	33.8%
Three-person households	1,462 ±255	18.5% ±3.1 pp	16.5%	15.3%
Four-person households	1,133 ±202	14.3% ±2.4 pp	13.5%	12.6%
Five-person households	227 ±82	2.9% ±1.0 pp	5.2%	5.9%
Six-person households	103 ±64 · low precision	1.3% ±0.8 pp · low precision	1.8%	2.2%
Seven or more people	72 ±72 · low precision	0.9% ±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: 18,759
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Native	15,132 ±682	80.7% ±3.6 pp	82.0%	85.9%
Foreign born	3,627 ±682	19.3% ±3.6 pp	18.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 17,904
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
English only	12,815 ±898	71.6% ±4.9 pp	74.9%	77.7%
Spanish	2,867 ±683	16.0% ±3.8 pp	9.7%	13.6%
French, Haitian, or Cajun	266 ±343 · low precision	1.5% ±1.9 pp · low precision	1.9%	0.7%
German or other West Germanic	6 ±9 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	169 ±122 · low precision	0.9% ±0.7 pp · low precision	1.0%	0.7%
Other Indo-European	877 ±339	4.9% ±1.9 pp	6.1%	2.0%
Korean	10 ±13 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	135 ±161 · low precision	0.8% ±0.9 pp · low precision	2.2%	1.1%
Vietnamese	0 ±21 · low precision	0.0% ±0.1 pp · low precision	0.7%	0.5%
Tagalog, including Filipino	16 ±26 · low precision	0.1% ±0.1 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	117 ±115 · low precision	0.7% ±0.6 pp · low precision	1.3%	1.1%
Arabic	612 ±343 · low precision	3.4% ±1.9 pp · low precision	0.6%	0.5%
Other and unspecified	14 ±15 · low precision	0.1% ±0.1 pp · low precision	1.0%	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: 13,978
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Less than high school graduate	892 ±274	6.4% ±1.9 pp	8.6%	10.4%
High school graduate or equivalency	3,397 ±436	24.3% ±3.0 pp	22.6%	26.0%
Some college, no degree	2,408 ±397	17.2% ±2.8 pp	14.1%	19.1%
Associate’s degree	914 ±231	6.5% ±1.6 pp	7.5%	8.8%
Bachelor’s degree	3,986 ±371	28.5% ±2.5 pp	25.5%	21.6%
Graduate or professional degree	2,381 ±366	17.0% ±2.6 pp	21.8%	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: 18,612
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Same house	16,434 ±454	88.3% ±2.4 pp	88.3%	87.7%
Moved within same county	1,449 ±370	7.8% ±2.0 pp	5.6%	6.3%
Moved from a different county in the same state	274 ±130	1.5% ±0.7 pp	3.0%	3.1%
Moved from a different state	372 ±195 · low precision	2.0% ±1.0 pp · low precision	2.2%	2.3%
Moved from abroad	83 ±77 · low precision	0.4% ±0.4 pp · low precision	0.9%	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

2.6% of Winthrop Town residents (±1.4 percentage points) had no health insurance coverage when surveyed, compared with 2.6% in Massachusetts and 8.4% nationally. 92.0% 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	Winthrop Town	Massachusetts	U.S.	Compared with Massachusetts
People without health insurance Civilian noninstitutionalized population	2.6% ±1.4 pp · low precision	2.6%	8.4%	Not statistically different
Households with a broadband subscription Households	92.0% ±1.4 pp	92.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	3.4% ±1.2 pp	4.3%	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 Winthrop Town . 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 Winthrop Town housing and cost context or return to the city profile.