Johnson 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 151.83K Johnson County, IA population, 43.13K had German ancestry (28.41%), 30.68K had Unclassified ancestry (20.21%), and 29.82K had Other Groups ancestry (19.64%).
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).
Johnson County, IA Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| German | 43134 | 28.41 |
| Unclassified | 30681 | 20.21 |
| Other Groups | 29823 | 19.64 |
| Irish | 20294 | 13.37 |
| English | 15469 | 10.19 |
| Norwegian | 5995 | 3.95 |
| Subsaharan African | 5642 | 3.72 |
| American | 5554 | 3.66 |
| Czech | 4911 | 3.23 |
| Italian | 4793 | 3.16 |
| Swedish | 3953 | 2.60 |
| European | 3885 | 2.56 |
| French (except Basque) | 3207 | 2.11 |
| Dutch | 3037 | 2.00 |
| Polish | 2853 | 1.88 |
| Scottish | 2674 | 1.76 |
| African | 2262 | 1.49 |
| Danish | 2035 | 1.34 |
| Sudanese | 1980 | 1.30 |
| Scotch Irish | 1182 | 0.78 |
| Welsh | 1172 | 0.77 |
| Swiss | 1163 | 0.77 |
| British | 1084 | 0.71 |
| Russian | 1000 | 0.66 |
| Scandinavian | 917 | 0.60 |
| Northern European | 698 | 0.46 |
| French Canadian | 566 | 0.37 |
| Greek | 514 | 0.34 |
| Belgian | 458 | 0.30 |
| Hungarian | 416 | 0.27 |
| Lithuanian | 402 | 0.27 |
| Eastern European | 380 | 0.25 |
| Kenyan | 355 | 0.23 |
| Czechoslovakian | 347 | 0.23 |
| Nigerian | 294 | 0.19 |
| Palestinian | 263 | 0.17 |
| Portuguese | 262 | 0.17 |
| West Indian (except Hispanic groups) | 256 | 0.17 |
| Iranian | 243 | 0.16 |
| Luxembourger | 228 | 0.15 |
| Finnish | 216 | 0.14 |
| Syrian | 212 | 0.14 |
| Arab | 197 | 0.13 |
| Lebanese | 192 | 0.13 |
| Pennsylvania German | 175 | 0.12 |
| Albania | 172 | 0.11 |
| Canadian | 161 | 0.11 |
| Austrian | 140 | 0.09 |
| Ukrainian | 137 | 0.09 |
| Jamaican | 128 | 0.08 |
| Icelander | 127 | 0.08 |
| Slovak | 118 | 0.08 |
| Yugoslavian | 117 | 0.08 |
| Moroccan | 114 | 0.08 |
| Brazilian | 109 | 0.07 |
| Iraqi | 108 | 0.07 |
| Croatian | 92 | 0.06 |
| Australian | 69 | 0.05 |
| Serbian | 68 | 0.05 |
| Belizean | 54 | 0.04 |
| Israeli | 53 | 0.04 |
| Armenian | 49 | 0.03 |
| Turkish | 49 | 0.03 |
| Somali | 44 | 0.03 |
| Egyptian | 42 | 0.03 |
| West Indian | 42 | 0.03 |
| Romanian | 37 | 0.02 |
| Slovene | 35 | 0.02 |
| Ethiopian | 35 | 0.02 |
| Slavic | 34 | 0.02 |
| British West Indian | 32 | 0.02 |
| Haitian | 25 | 0.02 |
| Liberian | 19 | 0.01 |
| South African | 17 | 0.01 |
| Maltese | 16 | 0.01 |
| Ghanaian | 16 | 0.01 |
| Assyrian/Chaldean/Syriac | 13 | 0.01 |
| Celtic | 13 | 0.01 |
| Basque | 10 | 0.01 |
| Cape Verdean | 7 | 0.01 |
| Macedonian | 6 | 0.00 |
| Bulgarian | 4 | 0.00 |