Demographics · CT
Stamford, CT demographics: 137,144 residents, with a median age of 38.4 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
137,144 people live in Stamford, at a median age of 38.4 years (American Community Survey 2020–2024, a 5-year average)
Median age 38.4 years — younger than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Stamford, the largest race group is White (46.6%); 28.3% of residents are Hispanic or Latino (of any race); 31.3% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Stamford is 38.4 years (±0.7), younger than the U.S. median of 38.9 years. The population is 48.3% male and 51.7% female. The largest age band is 25 to 34 at 17.3%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 7,785 | 5.7% | ±787 |
| 5 to 17 | 17,446 | 12.7% | ±1,193 |
| 18 to 24 | 12,951 | 9.4% | ±1,125 |
| 25 to 34 | 23,763 | 17.3% | ±1,172 |
| 35 to 44 | 19,584 | 14.3% | ±1,212 |
| 45 to 54 | 16,810 | 12.3% | ±997 |
| 55 to 64 | 16,613 | 12.1% | ±960 |
| 65 to 74 | 12,578 | 9.2% | ±922 |
| 75 and over | 9,614 | 7.0% | ±798 |
Median age by sex: 37.4 (male) · 39.0 (female).
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 Stamford is White at 46.6% of the population. Separately, 28.3% 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 | 63,975 | 46.6% | ±2,107 |
| Black or African American alone | 24,780 | 18.1% | ±1,767 |
| American Indian & Alaska Native alone | 901 | 0.7% | ±469 · low precision |
| Asian alone | 10,147 | 7.4% | ±903 |
| Native Hawaiian & Pacific Islander alone | 139 | 0.1% | ±172 · low precision |
| Some other race alone | 15,956 | 11.6% | ±1,768 |
| Two or more races | 21,246 | 15.5% | ±2,114 |
| Hispanic or Latino (of any race) | 38,810 | 28.3% | ±1,642 |
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
Stamford has 55,291 households. 59.0% are family households and 31.9% are people living alone. The average household holds 2.45 people.
Total households
55,291
ACS 2020–2024 5-yr · B11001
Avg household size
2.45
ACS 2020–2024 5-yr · B25010 · ±0.05
Family households
59.0%
Share of all households · B11001
Living alone
31.9%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 55,291 | ±1,100 |
| Family households | 32,611 | ±909 |
| Nonfamily households | 22,680 | ±1,182 |
| Householder living alone | 17,643 | ±998 |
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
31.3% of Stamford residents were born outside the United States. 59.4% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (22.5%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 31.3% | 42,942 people · B05002 |
| Speak only English at home (age 5+) | 59.4% | C16001 |
| Top non-English language at home | 22.5% | Spanish · 29,161 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
51.7% of adults age 25 and over in Stamford 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+) | 51.7% | 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 Stamford is 0973000. 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/.