Demographics · CA
Santa Rosa, CA demographics: 177,090 residents, with a median age of 41.2 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
177,090 people live in Santa Rosa, at a median age of 41.2 years (American Community Survey 2020–2024, a 5-year average)
Median age 41.2 years — older than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Santa Rosa, the largest race group is White (52.9%); 37.4% of residents are Hispanic or Latino (of any race); 21.2% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Santa Rosa is 41.2 years (±0.5), older than the U.S. median of 38.9 years. The population is 48.8% male and 51.2% female. The largest age band is 5 to 17 at 15.3%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 8,464 | 4.8% | ±611 |
| 5 to 17 | 27,089 | 15.3% | ±1,279 |
| 18 to 24 | 14,078 | 7.9% | ±910 |
| 25 to 34 | 23,857 | 13.5% | ±1,035 |
| 35 to 44 | 24,951 | 14.1% | ±1,126 |
| 45 to 54 | 23,532 | 13.3% | ±910 |
| 55 to 64 | 21,469 | 12.1% | ±1,021 |
| 65 to 74 | 19,801 | 11.2% | ±979 |
| 75 and over | 13,849 | 7.8% | ±825 |
Median age by sex: 39.8 (male) · 42.4 (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 Santa Rosa is White at 52.9% of the population. Separately, 37.4% 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 | 93,720 | 52.9% | ±2,019 |
| Black or African American alone | 3,627 | 2.0% | ±629 |
| American Indian & Alaska Native alone | 2,659 | 1.5% | ±605 |
| Asian alone | 11,465 | 6.5% | ±750 |
| Native Hawaiian & Pacific Islander alone | 770 | 0.4% | ±293 |
| Some other race alone | 37,897 | 21.4% | ±2,722 |
| Two or more races | 26,952 | 15.2% | ±2,280 |
| Hispanic or Latino (of any race) | 66,211 | 37.4% | ±1,961 |
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
Santa Rosa has 68,321 households. 62.3% are family households and 28.6% are people living alone. The average household holds 2.53 people.
Total households
68,321
ACS 2020–2024 5-yr · B11001
Avg household size
2.53
ACS 2020–2024 5-yr · B25010 · ±0.03
Family households
62.3%
Share of all households · B11001
Living alone
28.6%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 68,321 | ±893 |
| Family households | 42,564 | ±862 |
| Nonfamily households | 25,757 | ±1,168 |
| Householder living alone | 19,512 | ±1,058 |
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
21.2% of Santa Rosa residents were born outside the United States. 65.0% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (27.4%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 21.2% | 37,505 people · B05002 |
| Speak only English at home (age 5+) | 65.0% | C16001 |
| Top non-English language at home | 27.4% | Spanish · 46,163 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
35.1% of adults age 25 and over in Santa Rosa 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+) | 35.1% | 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 Santa Rosa is 0670098. 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/.