Ranking of Illinois Counties By Percentage of Population with Slovak Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 32.77K people in Illinois with Slovak ancestry (0.26% of Illinois population). Among all Illinois counties, LaSalle County had the highest percentage of its population with Slovak ancestry (1.52%), followed by Livingston County (1.01%), and Grundy County (0.72%).
The chart and table below shows the top 10 counties with high percentage of its population having Slovak ancestry.
You can see similar information for other states and for other ancestry groups in Illinois.
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Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Illinois Counties By Percentage of Population with Slovak Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | LaSalle County | 1.52 |
| 2 | Livingston County | 1.01 |
| 3 | Grundy County | 0.72 |
| 4 | Marshall County | 0.63 |
| 5 | Will County | 0.54 |
| 6 | Macoupin County | 0.49 |
| 7 | DuPage County | 0.47 |
| 8 | Hamilton County | 0.44 |
| 9 | Putnam County | 0.41 |
| 10 | Sangamon County | 0.38 |
| 11 | Kendall County | 0.37 |
| 11 | Montgomery County | 0.37 |
| 12 | Madison County | 0.35 |
| 13 | Christian County | 0.34 |
| 14 | McHenry County | 0.29 |
| 14 | Pike County | 0.29 |
| 15 | Bureau County | 0.28 |
| 15 | Jo Daviess County | 0.28 |
| 16 | Mercer County | 0.27 |
| 17 | Lake County | 0.25 |
| 18 | Cook County | 0.24 |
| 18 | Morgan County | 0.24 |
| 19 | McLean County | 0.22 |
| 20 | Hancock County | 0.21 |
| 20 | Piatt County | 0.21 |
| 21 | Kane County | 0.19 |
| 22 | DeKalb County | 0.18 |
| 22 | Johnson County | 0.18 |
| 22 | Kankakee County | 0.18 |
| 23 | Shelby County | 0.17 |
| 23 | Woodford County | 0.17 |
| 24 | Lee County | 0.16 |
| 24 | Vermilion County | 0.16 |
| 25 | Henry County | 0.13 |
| 26 | Champaign County | 0.12 |
| 26 | Iroquois County | 0.12 |
| 26 | Jackson County | 0.12 |
| 26 | Jefferson County | 0.12 |
| 26 | Menard County | 0.12 |
| 26 | Whiteside County | 0.12 |
| 27 | Crawford County | 0.11 |
| 27 | Winnebago County | 0.11 |
| 28 | Ford County | 0.10 |
| 28 | Randolph County | 0.10 |
| 28 | St. Clair County | 0.10 |
| 28 | Tazewell County | 0.10 |
| 29 | Carroll County | 0.09 |
| 29 | Ogle County | 0.09 |
| 30 | Peoria County | 0.08 |
| 31 | Bond County | 0.07 |
| 32 | Franklin County | 0.06 |
| 32 | White County | 0.06 |
| 33 | Clay County | 0.05 |
| 33 | Logan County | 0.05 |
| 34 | Rock Island County | 0.04 |
| 35 | Boone County | 0.03 |
| 35 | Cass County | 0.03 |
| 35 | Coles County | 0.03 |
| 35 | Marion County | 0.03 |
| 35 | Monroe County | 0.03 |
| 35 | Moultrie County | 0.03 |
| 35 | Perry County | 0.03 |
| 35 | Union County | 0.03 |
| 36 | Clinton County | 0.02 |
| 36 | Knox County | 0.02 |
| 36 | Macon County | 0.02 |
| 36 | Williamson County | 0.02 |
| 37 | Adams County | 0.01 |
| 37 | Fayette County | 0.01 |
| 37 | Warren County | 0.01 |
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