Ranking of Illinois Counties By 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. Among all Illinois counties, Cook County had the highest population with Slovak ancestry (12.66K), followed by DuPage County (4.37K), and Will County (3.76K).
The chart and table below shows the top 10 counties with high number of people with 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 Population with Slovak Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Cook County | 12660 |
| 2 | DuPage County | 4366 |
| 3 | Will County | 3764 |
| 4 | Lake County | 1763 |
| 5 | LaSalle County | 1672 |
| 6 | Kane County | 989 |
| 7 | Madison County | 935 |
| 8 | McHenry County | 897 |
| 9 | Sangamon County | 741 |
| 10 | Kendall County | 480 |
| 11 | McLean County | 380 |
| 12 | Grundy County | 377 |
| 13 | Livingston County | 362 |
| 14 | Winnebago County | 309 |
| 15 | St. Clair County | 251 |
| 16 | Champaign County | 246 |
| 17 | Macoupin County | 219 |
| 18 | Kankakee County | 192 |
| 19 | DeKalb County | 179 |
| 20 | Peoria County | 153 |
| 21 | Tazewell County | 134 |
| 22 | Vermilion County | 118 |
| 23 | Christian County | 117 |
| 24 | Montgomery County | 104 |
| 25 | Bureau County | 93 |
| 26 | Morgan County | 78 |
| 27 | Marshall County | 74 |
| 28 | Whiteside County | 66 |
| 29 | Henry County | 65 |
| 30 | Jackson County | 64 |
| 30 | Woodford County | 64 |
| 31 | Jo Daviess County | 61 |
| 32 | Lee County | 55 |
| 33 | Rock Island County | 51 |
| 34 | Ogle County | 48 |
| 35 | Jefferson County | 44 |
| 36 | Mercer County | 43 |
| 36 | Pike County | 43 |
| 37 | Hancock County | 38 |
| 38 | Hamilton County | 35 |
| 38 | Piatt County | 35 |
| 38 | Shelby County | 35 |
| 39 | Iroquois County | 33 |
| 40 | Randolph County | 31 |
| 41 | Franklin County | 24 |
| 41 | Johnson County | 24 |
| 42 | Putnam County | 23 |
| 43 | Crawford County | 21 |
| 44 | Macon County | 20 |
| 45 | Boone County | 16 |
| 46 | Logan County | 15 |
| 46 | Menard County | 15 |
| 47 | Carroll County | 14 |
| 48 | Ford County | 13 |
| 49 | Coles County | 12 |
| 50 | Bond County | 11 |
| 50 | Marion County | 11 |
| 50 | Williamson County | 11 |
| 51 | Monroe County | 10 |
| 52 | Adams County | 8 |
| 52 | Knox County | 8 |
| 52 | White County | 8 |
| 53 | Clinton County | 7 |
| 54 | Clay County | 6 |
| 54 | Perry County | 6 |
| 55 | Moultrie County | 5 |
| 55 | Union County | 5 |
| 56 | Cass County | 4 |
| 57 | Fayette County | 3 |
| 58 | Warren County | 2 |