O'Fallon city, MO Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 90.80K O'Fallon city, MO population, 27.97K had German ancestry (30.80%), 21.74K had Unclassified ancestry (23.95%), and 16.47K had Other Groups ancestry (18.14%).
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 Missouri cities and places, Missouri counties, and for Missouri.
Data Source: US Census - ACS 5-Year Estimates (2021).
O'Fallon city, MO Population By Ancestry in 2021
Items per page:
0 of 0
| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| German | 27969 | 30.80 |
| Unclassified | 21744 | 23.95 |
| Other Groups | 16473 | 18.14 |
| Irish | 14630 | 16.11 |
| English | 9677 | 10.66 |
| Italian | 6693 | 7.37 |
| American | 5850 | 6.44 |
| French (except Basque) | 3402 | 3.75 |
| Polish | 3193 | 3.52 |
| European | 1835 | 2.02 |
| Scottish | 1552 | 1.71 |
| Dutch | 1276 | 1.41 |
| Scotch Irish | 615 | 0.68 |
| British | 567 | 0.62 |
| Norwegian | 530 | 0.58 |
| Swedish | 513 | 0.56 |
| Russian | 392 | 0.43 |
| Welsh | 357 | 0.39 |
| Greek | 290 | 0.32 |
| Czech | 261 | 0.29 |
| Swiss | 237 | 0.26 |
| Scandinavian | 210 | 0.23 |
| Croatian | 195 | 0.22 |
| Austrian | 169 | 0.19 |
| Eastern European | 167 | 0.18 |
| West Indian (except Hispanic groups) | 163 | 0.18 |
| Hungarian | 162 | 0.18 |
| Danish | 155 | 0.17 |
| French Canadian | 150 | 0.17 |
| Ukrainian | 145 | 0.16 |
| Brazilian | 135 | 0.15 |
| Jamaican | 113 | 0.12 |
| Subsaharan African | 102 | 0.11 |
| Belgian | 101 | 0.11 |
| Iranian | 97 | 0.11 |
| Slovak | 92 | 0.10 |
| Finnish | 90 | 0.10 |
| Turkish | 86 | 0.10 |
| Lithuanian | 71 | 0.08 |
| Czechoslovakian | 69 | 0.08 |
| Northern European | 66 | 0.07 |
| Lebanese | 65 | 0.07 |
| African | 57 | 0.06 |
| Haitian | 50 | 0.06 |
| Pennsylvania German | 28 | 0.03 |
| Bulgarian | 26 | 0.03 |
| Portuguese | 26 | 0.03 |
| Cajun | 21 | 0.02 |
| Armenian | 19 | 0.02 |
| Australian | 18 | 0.02 |