Ranking of Illinois Counties By Percentage of Population with Finnish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 16.24K people in Illinois with Finnish ancestry (0.13% of Illinois population). Among all Illinois counties, McHenry County had the highest percentage of its population with Finnish ancestry (0.34%), followed by Lake County (0.33%), and Jo Daviess County (0.32%).
The chart and table below shows the top 10 counties with high percentage of its population having Finnish 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 Finnish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | McHenry County | 0.34 |
| 2 | Lake County | 0.33 |
| 3 | Jo Daviess County | 0.32 |
| 4 | DeKalb County | 0.26 |
| 5 | Ogle County | 0.24 |
| 6 | Hancock County | 0.23 |
| 7 | McDonough County | 0.22 |
| 7 | Winnebago County | 0.22 |
| 8 | Effingham County | 0.19 |
| 9 | Fulton County | 0.18 |
| 10 | DuPage County | 0.17 |
| 10 | Kane County | 0.17 |
| 11 | Bureau County | 0.16 |
| 11 | Champaign County | 0.16 |
| 12 | Carroll County | 0.15 |
| 13 | Will County | 0.13 |
| 14 | Coles County | 0.12 |
| 14 | Grundy County | 0.12 |
| 14 | Kendall County | 0.12 |
| 15 | Cook County | 0.11 |
| 15 | Henry County | 0.11 |
| 15 | Stephenson County | 0.11 |
| 16 | Boone County | 0.10 |
| 16 | LaSalle County | 0.10 |
| 16 | Montgomery County | 0.10 |
| 16 | Piatt County | 0.10 |
| 16 | Sangamon County | 0.10 |
| 17 | Fayette County | 0.09 |
| 17 | McLean County | 0.09 |
| 18 | Pope County | 0.08 |
| 18 | Rock Island County | 0.08 |
| 19 | Tazewell County | 0.07 |
| 20 | Jackson County | 0.06 |
| 20 | Kankakee County | 0.06 |
| 20 | Madison County | 0.06 |
| 20 | Monroe County | 0.06 |
| 20 | Perry County | 0.06 |
| 21 | Marshall County | 0.05 |
| 21 | Peoria County | 0.05 |
| 21 | Pike County | 0.05 |
| 21 | Whiteside County | 0.05 |
| 22 | Ford County | 0.04 |
| 22 | Lee County | 0.04 |
| 22 | Vermilion County | 0.04 |
| 22 | Warren County | 0.04 |
| 22 | Williamson County | 0.04 |
| 22 | Woodford County | 0.04 |
| 23 | Adams County | 0.03 |
| 23 | Douglas County | 0.03 |
| 23 | Franklin County | 0.03 |
| 23 | Jefferson County | 0.03 |
| 23 | Logan County | 0.03 |
| 23 | Shelby County | 0.03 |
| 24 | Edgar County | 0.02 |
| 24 | Johnson County | 0.02 |
| 24 | Livingston County | 0.02 |
| 24 | Macon County | 0.02 |
| 24 | St. Clair County | 0.02 |
| 24 | Scott County | 0.02 |
| 25 | Clinton County | 0.01 |
| 25 | Marion County | 0.01 |
| 25 | Mercer County | 0.01 |
| 25 | Morgan County | 0.01 |
| 25 | Moultrie County | 0.01 |
| 25 | Saline County | 0.01 |
| 25 | Washington County | 0.01 |
| 25 | Wayne County | 0.01 |
| 26 | Knox County | 0.002 |
| 26 | Macoupin County | 0.002 |
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