Demographics · CA
Fullerton, CA demographics: 140,968 residents, with a median age of 36.9 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
140,968people live in Fullerton, at a median age of 36.9 years (American Community Survey 2020–2024, a 5-year average)
Median age 36.9 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 Fullerton, the largest race group is White (37.2%); 40.3% of residents are Hispanic or Latino (of any race); 29.3% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Fullerton is 36.9 years (±0.8), younger than the U.S. median of 38.9 years. The population is 49.6% male and 50.4% female. The largest age band is 5 to 17 at 16.4%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 8,078 | 5.7% | ±966 |
| 5 to 17 | 23,117 | 16.4% | ±1,466 |
| 18 to 24 | 13,860 | 9.8% | ±1,085 |
| 25 to 34 | 21,607 | 15.3% | ±1,230 |
| 35 to 44 | 17,644 | 12.5% | ±1,027 |
| 45 to 54 | 18,344 | 13.0% | ±1,030 |
| 55 to 64 | 16,883 | 12.0% | ±1,109 |
| 65 to 74 | 11,964 | 8.5% | ±847 |
| 75 and over | 9,471 | 6.7% | ±711 |
Median age by sex: 36.2 (male) · 37.7 (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 Fullerton is White at 37.2% of the population. Separately, 40.3% 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 | 52,445 | 37.2% | ±2,872 |
| Black or African American alone | 2,848 | 2.0% | ±623 |
| American Indian & Alaska Native alone | 1,206 | 0.9% | ±421 |
| Asian alone | 35,077 | 24.9% | ±2,009 |
| Native Hawaiian & Pacific Islander alone | 269 | 0.2% | ±136 · low precision |
| Some other race alone | 23,216 | 16.5% | ±2,514 |
| Two or more races | 25,907 | 18.4% | ±2,320 |
| Hispanic or Latino (of any race) | 56,779 | 40.3% | ±2,693 |
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
Fullerton has 48,117 households. 69.4% are family households and 22.1% are people living alone. The average household holds 2.86 people.
Total households
48,117
ACS 2020–2024 5-yr · B11001
Avg household size
2.86
ACS 2020–2024 5-yr · B25010 · ±0.04
Family households
69.4%
Share of all households · B11001
Living alone
22.1%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 48,117 | ±752 |
| Family households | 33,390 | ±700 |
| Nonfamily households | 14,727 | ±822 |
| Householder living alone | 10,650 | ±709 |
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
29.3% of Fullerton residents were born outside the United States. 52.9% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (26.1%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 29.3% | 41,364 people · B05002 |
| Speak only English at home (age 5+) | 52.9% | C16001 |
| Top non-English language at home | 26.1% | Spanish · 34,709 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
43.5% of adults age 25 and over in Fullerton 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+) | 43.5% | 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 Fullerton is 0628000. 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/.