Demographics · CA
Rancho Cucamonga, CA demographics: 175,411 residents, with a median age of 38.6 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
175,411 people live in Rancho Cucamonga, 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 Rancho Cucamonga, the largest race group is White (40.2%); 38.1% of residents are Hispanic or Latino (of any race); 20.8% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Rancho Cucamonga is 38.6 years (±0.6), about the same as the U.S. median of 38.9 years. The population is 50.1% male and 49.9% female. The largest age band is 5 to 17 at 16.1%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 11,222 | 6.4% | ±916 |
| 5 to 17 | 28,285 | 16.1% | ±1,313 |
| 18 to 24 | 13,739 | 7.8% | ±941 |
| 25 to 34 | 26,069 | 14.9% | ±1,292 |
| 35 to 44 | 23,508 | 13.4% | ±1,216 |
| 45 to 54 | 24,241 | 13.8% | ±1,180 |
| 55 to 64 | 22,854 | 13.0% | ±1,238 |
| 65 to 74 | 16,066 | 9.2% | ±948 |
| 75 and over | 9,427 | 5.4% | ±842 |
Median age by sex: 36.8 (male) · 40.7 (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 Rancho Cucamonga is White at 40.2% of the population. Separately, 38.1% 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 | 70,580 | 40.2% | ±2,219 |
| Black or African American alone | 15,246 | 8.7% | ±1,411 |
| American Indian & Alaska Native alone | 2,378 | 1.4% | ±698 |
| Asian alone | 26,773 | 15.3% | ±1,746 |
| Native Hawaiian & Pacific Islander alone | 452 | 0.3% | ±203 |
| Some other race alone | 26,923 | 15.3% | ±2,376 |
| Two or more races | 33,059 | 18.8% | ±2,276 |
| Hispanic or Latino (of any race) | 66,809 | 38.1% | ±2,086 |
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
Rancho Cucamonga has 58,835 households. 74.6% are family households and 19.7% are people living alone. The average household holds 2.93 people.
Total households
58,835
ACS 2020–2024 5-yr · B11001
Avg household size
2.93
ACS 2020–2024 5-yr · B25010 · ±0.05
Family households
74.6%
Share of all households · B11001
Living alone
19.7%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 58,835 | ±924 |
| Family households | 43,902 | ±798 |
| Nonfamily households | 14,933 | ±1,059 |
| Householder living alone | 11,599 | ±1,002 |
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
20.8% of Rancho Cucamonga residents were born outside the United States. 65.8% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (18.1%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 20.8% | 36,443 people · B05002 |
| Speak only English at home (age 5+) | 65.8% | C16001 |
| Top non-English language at home | 18.1% | Spanish · 29,654 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
37.5% of adults age 25 and over in Rancho Cucamonga 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+) | 37.5% | 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 Rancho Cucamonga is 0659451. 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/.