Ogle County, IL Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 51.79K Ogle County, IL population, 15.65K had German ancestry (30.21%), 13.28K had Unclassified ancestry (25.63%), and 9.21K had Other Groups ancestry (17.79%).
The chart below shows the top 10 ancestry groups by percentage, and the table below shows both the population and percentages for many ancestry groups.
You can see similar information for other Illinois counties, and for Illinois.
NB: People could belong to one or more ancestry groups.
Data Source: US Census Bureau.
Ogle County, IL Population By Ancestry in 2021
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| Ancestry | Population | Percent of Pop. (%) |
|---|---|---|
| German | 15646 | 30.21 |
| Unclassified | 13275 | 25.63 |
| Other Groups | 9211 | 17.79 |
| Irish | 7135 | 13.78 |
| English | 4476 | 8.64 |
| Swedish | 2974 | 5.74 |
| American | 2723 | 5.26 |
| Italian | 2635 | 5.09 |
| Norwegian | 1785 | 3.45 |
| Polish | 1707 | 3.30 |
| French (except Basque) | 998 | 1.93 |
| Dutch | 927 | 1.79 |
| European | 642 | 1.24 |
| Scottish | 637 | 1.23 |
| Scotch Irish | 416 | 0.80 |
| Swiss | 273 | 0.53 |
| Scandinavian | 242 | 0.47 |
| Russian | 236 | 0.46 |
| Welsh | 197 | 0.38 |
| Danish | 192 | 0.37 |
| British | 188 | 0.36 |
| Lithuanian | 182 | 0.35 |
| Greek | 150 | 0.29 |
| Czech | 135 | 0.26 |
| Hungarian | 128 | 0.25 |
| Finnish | 124 | 0.24 |
| Subsaharan African | 106 | 0.21 |
| Austrian | 104 | 0.20 |
| African | 104 | 0.20 |
| West Indian (except Hispanic groups) | 89 | 0.17 |
| French Canadian | 84 | 0.16 |
| Jamaican | 79 | 0.15 |
| Belgian | 78 | 0.15 |
| Bulgarian | 63 | 0.12 |
| Canadian | 61 | 0.12 |
| Czechoslovakian | 61 | 0.12 |
| Slovak | 48 | 0.09 |
| Albania | 42 | 0.08 |
| Macedonian | 40 | 0.08 |
| Croatian | 35 | 0.07 |
| Yugoslavian | 33 | 0.06 |
| Serbian | 30 | 0.06 |
| Northern European | 26 | 0.05 |
| Eastern European | 24 | 0.05 |
| Pennsylvania German | 23 | 0.04 |
| Celtic | 19 | 0.04 |
| Slovene | 19 | 0.04 |
| Luxembourger | 17 | 0.03 |
| Portuguese | 17 | 0.03 |
| Arab | 16 | 0.03 |
| Ukrainian | 15 | 0.03 |
| Jordanian | 14 | 0.03 |
| Brazilian | 12 | 0.02 |
| Haitian | 10 | 0.02 |
| Icelander | 9 | 0.02 |
| Latvian | 4 | 0.01 |
| Cajun | 3 | 0.01 |
| Nigerian | 2 | 0.00 |
| Turkish | 2 | 0.00 |
| Palestinian | 1 | 0.00 |
| Romanian | 1 | 0.00 |