San Mateo, California Population By Ethnicity in Census 2020
Updated on February 22, 2026.
According to the data from the US 2020 decennial Census, in April 2020, among San Mateo, CA population of 764,442 people, 36.09% (275,902) identified their ethnicity as Non-Hispanic - White Alone, 29.80% (227,783) identified their ethnicity as Non-Hispanic - Asian Alone, and 13.35% (102,084) identified their ethnicity as Hispanic - Some Other Race Alone.
The first chart below shows the population by ethnicity and the second chart shows the percentage of the population for each ethnicity. You can also find the information in a table below.
You can see similar information for other California counties and also for the state of California.
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Data Source: US Census Bureau, 2020 Census.
San Mateo, CA Population By Ethnicity in Census 2020
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| Ethnicity | Population | % of County Population |
|---|---|---|
| Non-Hispanic - White Alone | 275902 | 36.09 |
| Non-Hispanic - Asian Alone | 227783 | 29.80 |
| Hispanic - Some Other Race Alone | 102084 | 13.35 |
| Hispanic - Two Or More Races | 55298 | 7.23 |
| Non-Hispanic - Two Or More Races | 38969 | 5.10 |
| Hispanic - White Alone | 24286 | 3.18 |
| Non-Hispanic - Black or African American Alone | 14701 | 1.92 |
| Non-Hispanic - Native Hawaiian And Pacific Islander Alone | 8840 | 1.16 |
| Non-Hispanic - Some Other Race Alone | 5840 | 0.76 |
| Hispanic - American Indian and Alaska Native Alone | 5791 | 0.76 |
| Hispanic - Asian Alone | 2459 | 0.32 |
| Non-Hispanic - American Indian and Alaska Native Alone | 1021 | 0.13 |
| Hispanic - Black or African American Alone | 1006 | 0.13 |
| Hispanic - Native Hawaiian And Pacific Islander Alone | 462 | 0.06 |
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