San Mateo city, CA Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 105.09K San Mateo city, CA population, 53.60K had Other Groups ancestry (51.01%), 17.60K had Unclassified ancestry (16.75%), and 8.15K had Irish ancestry (7.75%).
The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.
You can also see similar information for other California cities and places, California counties, and for California.
Data Source: US Census - ACS 5-Year Estimates (2021).
San Mateo city, CA Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 53604 | 51.01 |
| Unclassified | 17597 | 16.75 |
| Irish | 8147 | 7.75 |
| Italian | 7077 | 6.73 |
| German | 6577 | 6.26 |
| English | 5519 | 5.25 |
| American | 2523 | 2.40 |
| European | 2340 | 2.23 |
| French (except Basque) | 2193 | 2.09 |
| Scottish | 1775 | 1.69 |
| Polish | 1665 | 1.58 |
| Russian | 1606 | 1.53 |
| Norwegian | 1165 | 1.11 |
| Greek | 1078 | 1.03 |
| Portuguese | 1049 | 1.00 |
| Swedish | 878 | 0.84 |
| Dutch | 760 | 0.72 |
| Iranian | 684 | 0.65 |
| Northern European | 557 | 0.53 |
| Scotch Irish | 523 | 0.50 |
| Eastern European | 520 | 0.50 |
| Danish | 465 | 0.44 |
| British | 461 | 0.44 |
| Welsh | 449 | 0.43 |
| Austrian | 444 | 0.42 |
| Swiss | 436 | 0.42 |
| Armenian | 426 | 0.41 |
| Ukrainian | 417 | 0.40 |
| Subsaharan African | 401 | 0.38 |
| Scandinavian | 397 | 0.38 |
| Lebanese | 379 | 0.36 |
| Czech | 327 | 0.31 |
| West Indian (except Hispanic groups) | 308 | 0.29 |
| Croatian | 293 | 0.28 |
| French Canadian | 291 | 0.28 |
| Hungarian | 252 | 0.24 |
| Egyptian | 192 | 0.18 |
| Romanian | 179 | 0.17 |
| Palestinian | 168 | 0.16 |
| Nigerian | 168 | 0.16 |
| Maltese | 166 | 0.16 |
| Lithuanian | 154 | 0.15 |
| Canadian | 153 | 0.15 |
| Afghan | 152 | 0.14 |
| Brazilian | 151 | 0.14 |
| Jamaican | 147 | 0.14 |
| Turkish | 125 | 0.12 |
| Belizean | 119 | 0.11 |
| Sudanese | 114 | 0.11 |
| Yugoslavian | 97 | 0.09 |