Waukesha County, WI Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 4, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 405.33K Waukesha County, WI population, 173.98K had German ancestry (42.92%), 69.07K had Unclassified ancestry (17.04%), and 52.13K had Irish ancestry (12.86%).
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 see similar information for other Wisconsin counties, and for Wisconsin.
Data Source: US Census - ACS 5-Year Estimates (2021).
Waukesha County, WI Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| German | 173978 | 42.92 |
| Unclassified | 69074 | 17.04 |
| Irish | 52125 | 12.86 |
| Other Groups | 51557 | 12.72 |
| Polish | 50541 | 12.47 |
| English | 26537 | 6.55 |
| Italian | 22912 | 5.65 |
| Norwegian | 18234 | 4.50 |
| French (except Basque) | 12142 | 3.00 |
| American | 10853 | 2.68 |
| Swedish | 8417 | 2.08 |
| European | 7698 | 1.90 |
| Dutch | 6638 | 1.64 |
| Scottish | 5118 | 1.26 |
| Czech | 4720 | 1.16 |
| Swiss | 3577 | 0.88 |
| Danish | 3546 | 0.88 |
| Hungarian | 3525 | 0.87 |
| Austrian | 3094 | 0.76 |
| Greek | 2797 | 0.69 |
| Welsh | 2717 | 0.67 |
| Russian | 2652 | 0.65 |
| French Canadian | 2548 | 0.63 |
| Finnish | 2404 | 0.59 |
| Scandinavian | 2141 | 0.53 |
| Croatian | 2057 | 0.51 |
| Scotch Irish | 1798 | 0.44 |
| Slovak | 1770 | 0.44 |
| British | 1527 | 0.38 |
| Serbian | 1375 | 0.34 |
| Belgian | 1342 | 0.33 |
| Lithuanian | 1209 | 0.30 |
| Czechoslovakian | 1123 | 0.28 |
| Slovene | 1107 | 0.27 |
| Eastern European | 923 | 0.23 |
| Ukrainian | 890 | 0.22 |
| Northern European | 767 | 0.19 |
| Yugoslavian | 691 | 0.17 |
| Subsaharan African | 595 | 0.15 |
| Slavic | 535 | 0.13 |
| Luxembourger | 517 | 0.13 |
| Canadian | 432 | 0.11 |
| Romanian | 363 | 0.09 |
| West Indian (except Hispanic groups) | 350 | 0.09 |
| Armenian | 348 | 0.09 |
| Lebanese | 295 | 0.07 |
| Brazilian | 295 | 0.07 |
| African | 269 | 0.07 |
| Albania | 264 | 0.07 |
| Portuguese | 261 | 0.06 |
| Latvian | 259 | 0.06 |
| Iranian | 219 | 0.05 |
| Turkish | 204 | 0.05 |
| Bulgarian | 196 | 0.05 |
| West Indian | 171 | 0.04 |
| Australian | 143 | 0.04 |
| Macedonian | 116 | 0.03 |
| Ghanaian | 113 | 0.03 |
| Nigerian | 108 | 0.03 |
| Palestinian | 104 | 0.03 |
| Jamaican | 98 | 0.02 |
| Estonian | 96 | 0.02 |
| Arab | 82 | 0.02 |
| Iraqi | 74 | 0.02 |
| Haitian | 67 | 0.02 |
| Jordanian | 59 | 0.02 |
| Cajun | 55 | 0.01 |
| Pennsylvania German | 54 | 0.01 |
| South African | 46 | 0.01 |
| Syrian | 45 | 0.01 |
| Israeli | 31 | 0.01 |
| Senegalese | 30 | 0.01 |
| German Russian | 27 | 0.01 |
| Basque | 24 | 0.01 |
| Trinidadian and Tobagonian | 24 | 0.01 |
| Egyptian | 23 | 0.01 |
| Celtic | 20 | 0.01 |
| Carpatho Rusyn | 16 | 0.00 |
| Maltese | 6 | 0.00 |
| Icelander | 3 | 0.00 |
| Ethiopian | 3 | 0.00 |