Janesville city, WI Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 8, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 65.51K Janesville city, WI population, 22.61K had German ancestry (34.52%), 13.52K had Unclassified ancestry (20.63%), and 10.09K had Irish ancestry (15.41%).
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 Wisconsin cities and places, Wisconsin counties, and for Wisconsin.
Data Source: US Census - ACS 5-Year Estimates (2021).
Janesville city, WI Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| German | 22610 | 34.52 |
| Unclassified | 13516 | 20.63 |
| Irish | 10091 | 15.41 |
| Other Groups | 9531 | 14.55 |
| Norwegian | 7659 | 11.69 |
| English | 6023 | 9.20 |
| American | 2803 | 4.28 |
| Italian | 2364 | 3.61 |
| Polish | 2287 | 3.49 |
| Swedish | 1442 | 2.20 |
| Swiss | 1186 | 1.81 |
| French (except Basque) | 1120 | 1.71 |
| Dutch | 1067 | 1.63 |
| Scottish | 907 | 1.39 |
| Scandinavian | 792 | 1.21 |
| European | 563 | 0.86 |
| Czech | 527 | 0.81 |
| Danish | 525 | 0.80 |
| Russian | 462 | 0.71 |
| Scotch Irish | 455 | 0.70 |
| Welsh | 377 | 0.58 |
| British | 354 | 0.54 |
| Hungarian | 315 | 0.48 |
| Subsaharan African | 279 | 0.43 |
| Finnish | 240 | 0.37 |
| French Canadian | 231 | 0.35 |
| African | 228 | 0.35 |
| Czechoslovakian | 201 | 0.31 |
| Armenian | 190 | 0.29 |
| Canadian | 153 | 0.23 |
| Greek | 149 | 0.23 |
| Belgian | 138 | 0.21 |
| Pennsylvania German | 121 | 0.19 |
| Austrian | 110 | 0.17 |
| Lithuanian | 98 | 0.15 |
| Slovak | 97 | 0.15 |
| Ukrainian | 75 | 0.11 |
| Albania | 71 | 0.11 |
| Portuguese | 70 | 0.11 |
| Iranian | 57 | 0.09 |
| Northern European | 51 | 0.08 |
| Eastern European | 49 | 0.08 |
| West Indian (except Hispanic groups) | 42 | 0.06 |
| Nigerian | 38 | 0.06 |
| Latvian | 35 | 0.05 |
| Jamaican | 35 | 0.05 |
| Slavic | 31 | 0.05 |
| Croatian | 25 | 0.04 |
| Turkish | 18 | 0.03 |
| Australian | 15 | 0.02 |