Ranking of Iowa Counties By Percentage of Population with Czech Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 49.62K people in Iowa with Czech ancestry (1.56% of Iowa population). Among all Iowa counties, Howard County had the highest percentage of its population with Czech ancestry (10.89%), followed by Tama County (8.81%), and Winneshiek County (7.28%).
The chart and table below shows the top 10 counties with high percentage of its population having Czech ancestry.
You can see similar information for other states and for other ancestry groups in Iowa.
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Related Topics: Iowa ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Iowa Counties By Percentage of Population with Czech Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Howard County | 10.89 |
| 2 | Tama County | 8.81 |
| 3 | Winneshiek County | 7.28 |
| 4 | Benton County | 5.10 |
| 5 | Linn County | 4.97 |
| 6 | Johnson County | 3.23 |
| 7 | Iowa County | 2.96 |
| 8 | Ringgold County | 2.89 |
| 9 | Jones County | 2.77 |
| 10 | Cedar County | 2.76 |
| 11 | Chickasaw County | 2.70 |
| 12 | Mills County | 2.40 |
| 13 | Pocahontas County | 2.09 |
| 14 | Cherokee County | 2.02 |
| 15 | Allamakee County | 1.99 |
| 16 | Marshall County | 1.92 |
| 17 | Cerro Gordo County | 1.90 |
| 18 | Poweshiek County | 1.85 |
| 19 | Hancock County | 1.83 |
| 20 | Delaware County | 1.82 |
| 21 | Adams County | 1.79 |
| 22 | Fayette County | 1.68 |
| 23 | Mitchell County | 1.62 |
| 24 | Floyd County | 1.50 |
| 25 | Pottawattamie County | 1.49 |
| 26 | Emmet County | 1.43 |
| 26 | Wright County | 1.43 |
| 27 | Black Hawk County | 1.41 |
| 28 | Cass County | 1.37 |
| 29 | Union County | 1.34 |
| 30 | Grundy County | 1.31 |
| 31 | Webster County | 1.29 |
| 32 | Keokuk County | 1.27 |
| 32 | Muscatine County | 1.27 |
| 33 | Bremer County | 1.20 |
| 33 | Buchanan County | 1.20 |
| 33 | Monroe County | 1.20 |
| 34 | Buena Vista County | 1.18 |
| 34 | Monona County | 1.18 |
| 35 | Clayton County | 1.11 |
| 36 | Madison County | 1.03 |
| 37 | Worth County | 1.01 |
| 38 | Polk County | 0.97 |
| 38 | Washington County | 0.97 |
| 39 | Scott County | 0.96 |
| 39 | Warren County | 0.96 |
| 40 | Hardin County | 0.94 |
| 41 | Harrison County | 0.93 |
| 42 | Story County | 0.92 |
| 42 | Woodbury County | 0.92 |
| 43 | Butler County | 0.90 |
| 44 | Winnebago County | 0.88 |
| 45 | Clarke County | 0.87 |
| 45 | Sioux County | 0.87 |
| 46 | Plymouth County | 0.85 |
| 47 | Dubuque County | 0.84 |
| 48 | Shelby County | 0.82 |
| 49 | Carroll County | 0.80 |
| 50 | Dallas County | 0.77 |
| 51 | Clinton County | 0.76 |
| 52 | Marion County | 0.75 |
| 53 | Boone County | 0.71 |
| 54 | Henry County | 0.69 |
| 55 | Lucas County | 0.68 |
| 55 | Page County | 0.68 |
| 56 | Dickinson County | 0.67 |
| 57 | Des Moines County | 0.66 |
| 58 | Guthrie County | 0.64 |
| 58 | Jasper County | 0.64 |
| 59 | Appanoose County | 0.63 |
| 59 | Fremont County | 0.63 |
| 60 | Calhoun County | 0.62 |
| 60 | Humboldt County | 0.62 |
| 61 | Crawford County | 0.59 |
| 62 | Jackson County | 0.53 |
| 62 | Mahaska County | 0.53 |
| 63 | Louisa County | 0.51 |
| 64 | Van Buren County | 0.50 |
| 65 | Taylor County | 0.49 |
| 66 | Audubon County | 0.41 |
| 66 | Kossuth County | 0.41 |
| 67 | O'Brien County | 0.40 |
| 68 | Franklin County | 0.39 |
| 69 | Ida County | 0.36 |
| 70 | Hamilton County | 0.35 |
| 70 | Sac County | 0.35 |
| 71 | Clay County | 0.34 |
| 71 | Lyon County | 0.34 |
| 72 | Jefferson County | 0.33 |
| 72 | Palo Alto County | 0.33 |
| 73 | Adair County | 0.27 |
| 74 | Osceola County | 0.24 |
| 75 | Greene County | 0.20 |
| 75 | Wapello County | 0.20 |
| 76 | Lee County | 0.16 |
| 77 | Montgomery County | 0.14 |
| 78 | Decatur County | 0.13 |
| 79 | Wayne County | 0.08 |
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