Decatur County, IA Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 3, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 7.72K Decatur County, IA population, 2.48K had Unclassified ancestry (32.11%), 1.68K had German ancestry (21.75%), and 1.31K had Other Groups ancestry (16.92%).
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 Iowa counties, and for Iowa.
Data Source: US Census - ACS 5-Year Estimates (2021).
Decatur County, IA Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Unclassified | 2478 | 32.11 |
| German | 1679 | 21.75 |
| Other Groups | 1306 | 16.92 |
| English | 876 | 11.35 |
| Irish | 858 | 11.12 |
| American | 491 | 6.36 |
| Norwegian | 223 | 2.89 |
| Dutch | 187 | 2.42 |
| Scottish | 180 | 2.33 |
| European | 122 | 1.58 |
| Polish | 119 | 1.54 |
| French (except Basque) | 118 | 1.53 |
| Scotch Irish | 103 | 1.34 |
| Swedish | 101 | 1.31 |
| Pennsylvania German | 93 | 1.21 |
| Italian | 76 | 0.99 |
| Danish | 67 | 0.87 |
| Welsh | 50 | 0.65 |
| British | 44 | 0.57 |
| Hungarian | 31 | 0.40 |
| West Indian (except Hispanic groups) | 28 | 0.36 |
| Ukrainian | 26 | 0.34 |
| Subsaharan African | 23 | 0.30 |
| Jamaican | 22 | 0.28 |
| Scandinavian | 16 | 0.21 |
| Swiss | 16 | 0.21 |
| Ethiopian | 13 | 0.17 |
| Albania | 12 | 0.16 |
| Austrian | 12 | 0.16 |
| Czech | 10 | 0.13 |
| Russian | 9 | 0.12 |
| Canadian | 8 | 0.10 |
| Nigerian | 8 | 0.10 |
| Finnish | 7 | 0.09 |
| Haitian | 6 | 0.08 |
| Australian | 5 | 0.07 |
| Belgian | 5 | 0.07 |
| Lithuanian | 5 | 0.07 |
| Northern European | 5 | 0.07 |
| Syrian | 4 | 0.05 |
| Luxembourger | 4 | 0.05 |
| Czechoslovakian | 2 | 0.03 |
| Greek | 2 | 0.03 |
| French Canadian | 1 | 0.01 |