Greenfield, Massachusetts demographics

Greenfield, MA demographics: median age 44.6; 39.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Greenfield city, Massachusetts · Incorporated city · GEOID 2527060. The survey estimates a population of 17,664 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Greenfield is 44.6 years, with a 90% margin of error of 2.1 years. There are 8,182 households (±252). 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	44.6 ±2.1	40.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 17,664
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Under 18	3,229 ±335	18.3% ±1.9 pp	19.4%	22.0%
18–34	3,204 ±365	18.1% ±2.1 pp	23.9%	22.8%
35–64	7,102 ±470	40.2% ±2.7 pp	38.9%	38.0%
65 and older	4,129 ±391	23.4% ±2.2 pp	17.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 17,664
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Male	8,609 ±306	48.7% ±1.7 pp	48.9%	49.5%
Female	9,055 ±304	51.3% ±1.7 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: 17,664
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
White alone	15,586 ±293	88.2% ±1.7 pp	68.6%	61.0%
Black or African American alone	396 ±123	2.2% ±0.7 pp	6.8%	12.2%
American Indian and Alaska Native alone	5 ±8 · low precision	0.0% ±0.0 pp · low precision	0.2%	0.9%
Asian alone	440 ±128	2.5% ±0.7 pp	7.3%	6.0%
Native Hawaiian and Other Pacific Islander alone	21 ±31 · low precision	0.1% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	380 ±199 · low precision	2.2% ±1.1 pp · low precision	5.8%	7.1%
Two or more races	836 ±241	4.7% ±1.4 pp	11.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 17,664
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Not Hispanic or Latino	16,635 ±309	94.2% ±1.7 pp	86.7%	80.7%
Hispanic or Latino	1,029 ±307	5.8% ±1.7 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: 8,182
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Married-couple family	2,812 ±238	34.4% ±2.7 pp	45.9%	46.9%
Other family: male householder, no spouse present	523 ±177	6.4% ±2.2 pp	4.7%	5.1%
Other family: female householder, no spouse present	1,010 ±185	12.3% ±2.2 pp	11.9%	12.2%
Nonfamily: householder living alone	3,115 ±317	38.1% ±3.7 pp	28.8%	28.7%
Nonfamily: householder not living alone	722 ±198	8.8% ±2.4 pp	8.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 8,182
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Households with people under 18	2,043 ±189	25.0% ±2.2 pp	27.9%	29.5%
Households without people under 18	6,139 ±329	75.0% ±3.3 pp	72.1%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 8,182
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
One-person nonfamily households	3,115 ±317	38.1% ±3.7 pp	28.8%	28.7%
Two-person households	2,730 ±339	33.4% ±4.0 pp	33.3%	33.8%
Three-person households	1,234 ±225	15.1% ±2.7 pp	16.5%	15.3%
Four-person households	785 ±180	9.6% ±2.2 pp	13.5%	12.6%
Five-person households	148 ±67	1.8% ±0.8 pp	5.2%	5.9%
Six-person households	102 ±72 · low precision	1.2% ±0.9 pp · low precision	1.8%	2.2%
Seven or more people	68 ±53 · low precision	0.8% ±0.7 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: 17,664
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Native	16,519 ±290	93.5% ±1.6 pp	82.0%	85.9%
Foreign born	1,145 ±290	6.5% ±1.6 pp	18.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 16,917
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
English only	15,522 ±380	91.8% ±2.0 pp	74.9%	77.7%
Spanish	536 ±235	3.2% ±1.4 pp	9.7%	13.6%
French, Haitian, or Cajun	87 ±56 · low precision	0.5% ±0.3 pp · low precision	1.9%	0.7%
German or other West Germanic	10 ±14 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	107 ±97 · low precision	0.6% ±0.6 pp · low precision	1.0%	0.7%
Other Indo-European	346 ±188 · low precision	2.0% ±1.1 pp · low precision	6.1%	2.0%
Korean	0 ±21 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	170 ±111 · low precision	1.0% ±0.7 pp · low precision	2.2%	1.1%
Vietnamese	32 ±37 · low precision	0.2% ±0.2 pp · low precision	0.7%	0.5%
Tagalog, including Filipino	21 ±31 · low precision	0.1% ±0.2 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	39 ±39 · low precision	0.2% ±0.2 pp · low precision	1.3%	1.1%
Arabic	14 ±17 · low precision	0.1% ±0.1 pp · low precision	0.6%	0.5%
Other and unspecified	33 ±46 · low precision	0.2% ±0.3 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: 13,207
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Less than high school graduate	848 ±220	6.4% ±1.7 pp	8.6%	10.4%
High school graduate or equivalency	3,423 ±411	25.9% ±3.0 pp	22.6%	26.0%
Some college, no degree	2,453 ±295	18.6% ±2.2 pp	14.1%	19.1%
Associate’s degree	1,313 ±245	9.9% ±1.8 pp	7.5%	8.8%
Bachelor’s degree	2,922 ±303	22.1% ±2.2 pp	25.5%	21.6%
Graduate or professional degree	2,248 ±279	17.0% ±2.1 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: 17,498
Category	Count ± MOE	Share ± MOE (pp)	Massachusetts	U.S.
Same house	15,226 ±412	87.0% ±2.3 pp	88.3%	87.7%
Moved within same county	1,319 ±291	7.5% ±1.7 pp	5.6%	6.3%
Moved from a different county in the same state	788 ±279	4.5% ±1.6 pp	3.0%	3.1%
Moved from a different state	149 ±73	0.9% ±0.4 pp	2.2%	2.3%
Moved from abroad	16 ±23 · low precision	0.1% ±0.1 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

1.7% of Greenfield residents (±0.8 percentage points) had no health insurance coverage when surveyed, compared with 2.6% in Massachusetts and 8.4% nationally. 91.3% 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	Greenfield	Massachusetts	U.S.	Compared with Massachusetts
People without health insurance Civilian noninstitutionalized population	1.7% ±0.8 pp	2.6%	8.4%	Lower
Households with a broadband subscription Households	91.3% ±2.3 pp	92.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	5.6% ±1.9 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 Greenfield . 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 Greenfield housing and cost context or return to the city profile.