Demographics · MA
Quincy, MA demographics: 102,114 residents, with a median age of 38.6 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
102,114people live in Quincy, at a median age of 38.6 years (American Community Survey 2020–2024, a 5-year average)
Median age 38.6 years — about even with the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Quincy, the largest race group is White (54.7%); 6.5% of residents are Hispanic or Latino (of any race); 33.0% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Quincy is 38.6 years (±0.8), about the same as the U.S. median of 38.9 years. The population is 50.4% male and 49.6% female. The largest age band is 25 to 34 at 21.1%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 4,758 | 4.7% | ±627 |
| 5 to 17 | 10,000 | 9.8% | ±810 |
| 18 to 24 | 8,612 | 8.4% | ±872 |
| 25 to 34 | 21,541 | 21.1% | ±1,164 |
| 35 to 44 | 15,561 | 15.2% | ±1,025 |
| 45 to 54 | 10,870 | 10.6% | ±777 |
| 55 to 64 | 12,649 | 12.4% | ±918 |
| 65 to 74 | 10,125 | 9.9% | ±869 |
| 75 and over | 7,998 | 7.8% | ±726 |
Median age by sex: 37.6 (male) · 39.6 (female).
Shares may not sum to 100% due to rounding. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B01001 sex by age, B01002 median age) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B02001 / B03003
The largest race group in Quincy is White at 54.7% of the population. Separately, 6.5% of residents are Hispanic or Latino of any race.Race and Hispanic origin are two different questions on the census form, so their shares are reported separately and are not additive.
| Race (alone, or two or more) | People | Share | ± margin |
|---|---|---|---|
| White alone | 55,813 | 54.7% | ±1,997 |
| Black or African American alone | 6,473 | 6.3% | ±1,111 |
| American Indian & Alaska Native alone | 191 | 0.2% | ±93 |
| Asian alone | 29,833 | 29.2% | ±1,415 |
| Native Hawaiian & Pacific Islander alone | 7 | 0.0% | ±14 · low precision |
| Some other race alone | 3,123 | 3.1% | ±969 |
| Two or more races | 6,674 | 6.5% | ±1,074 |
| Hispanic or Latino (of any race) | 6,673 | 6.5% | ±992 |
Race shares may not sum to 100% due to rounding; race and Hispanic origin are separate questions and are not additive. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B02001 race, B03003 Hispanic or Latino origin) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B11001 / B25010
Quincy has 45,285 households. 51.9% are family households and 35.6% are people living alone. The average household holds 2.22 people.
Total households
45,285
ACS 2020–2024 5-yr · B11001
Avg household size
2.22
ACS 2020–2024 5-yr · B25010 · ±0.05
Family households
51.9%
Share of all households · B11001
Living alone
35.6%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 45,285 | ±929 |
| Family households | 23,523 | ±624 |
| Nonfamily households | 21,762 | ±1,173 |
| Householder living alone | 16,128 | ±1,000 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B11001 household type, B25010 average household size) · place-grain · methodology →
ACS 2020–2024 · B05002 / C16001
33.0% of Quincy residents were born outside the United States. 61.1% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Chinese (incl. Mandarin, Cantonese) (15.5%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 33.0% | 33,707 people · B05002 |
| Speak only English at home (age 5+) | 61.1% | C16001 |
| Top non-English language at home | 15.5% | Chinese (incl. Mandarin, Cantonese) · 15,100 speakers · C16001 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B05002 place of birth, C16001 language spoken at home) · place-grain · methodology →
ACS 2020–2024 · B15003
50.3% of adults age 25 and over in Quincy hold a bachelor's degree or higher (the U.S. share is about 35%).
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 50.3% | B15003 lines 22–25 over line 1 · place-grain |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B15003 educational attainment, population 25+) · place-grain · methodology →
Sources · provenance
The GEOID for Quincy is 2555745. Every figure on this page is a place-grain American Community Survey 5-Year 2020–2024 estimate (ACS 5-Year Estimates 2020-2024 (released 2026-01-29)) shown with its margin of error. Full per-dataset detail: /sources/.