Ranking of Illinois Counties By Percentage of Population with American Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 449.24K people in Illinois with American ancestry (3.50% of Illinois population). Among all Illinois counties, Carroll County had the highest percentage of its population with American ancestry (14.39%), followed by Clay County (13.15%), and Fayette County (12.66%).
The chart and table below shows the top 10 counties with high percentage of its population having American 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 American Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Carroll County | 14.39 |
| 2 | Clay County | 13.15 |
| 3 | Fayette County | 12.66 |
| 4 | Hancock County | 12.55 |
| 5 | Pike County | 12.43 |
| 6 | Shelby County | 11.36 |
| 7 | Wabash County | 11.34 |
| 8 | White County | 11.23 |
| 9 | Edwards County | 11.15 |
| 10 | Schuyler County | 11.02 |
| 11 | Ford County | 10.23 |
| 12 | Pope County | 9.87 |
| 13 | Jasper County | 9.62 |
| 14 | De Witt County | 9.57 |
| 15 | Clark County | 9.56 |
| 16 | Effingham County | 9.45 |
| 17 | McDonough County | 9.44 |
| 18 | Jersey County | 9.43 |
| 18 | Johnson County | 9.43 |
| 19 | Jo Daviess County | 9.38 |
| 20 | Moultrie County | 9.22 |
| 21 | Christian County | 9.11 |
| 22 | Edgar County | 9.10 |
| 22 | Montgomery County | 9.10 |
| 23 | Bond County | 9.07 |
| 24 | Scott County | 9.04 |
| 25 | Crawford County | 9.01 |
| 26 | Cumberland County | 8.93 |
| 27 | Saline County | 8.84 |
| 28 | Richland County | 8.83 |
| 29 | Whiteside County | 8.80 |
| 30 | Franklin County | 8.62 |
| 31 | Greene County | 8.50 |
| 32 | Douglas County | 8.32 |
| 33 | Marion County | 8.11 |
| 34 | Macon County | 7.75 |
| 35 | Coles County | 7.72 |
| 36 | Stephenson County | 7.69 |
| 37 | Brown County | 7.63 |
| 38 | Morgan County | 7.46 |
| 39 | Vermilion County | 7.44 |
| 39 | Wayne County | 7.44 |
| 40 | Warren County | 7.42 |
| 41 | Marshall County | 7.38 |
| 42 | Fulton County | 7.21 |
| 43 | Hardin County | 7.08 |
| 44 | Lawrence County | 6.95 |
| 44 | Massac County | 6.95 |
| 45 | Hamilton County | 6.94 |
| 46 | Alexander County | 6.82 |
| 47 | Menard County | 6.81 |
| 47 | Williamson County | 6.81 |
| 48 | Cass County | 6.76 |
| 49 | Mason County | 6.74 |
| 50 | Mercer County | 6.49 |
| 51 | Adams County | 6.48 |
| 52 | Randolph County | 6.39 |
| 53 | Jefferson County | 6.29 |
| 54 | Knox County | 6.26 |
| 55 | Union County | 6.19 |
| 56 | Logan County | 6.09 |
| 56 | Macoupin County | 6.09 |
| 57 | Putnam County | 6.08 |
| 57 | Tazewell County | 6.08 |
| 58 | Woodford County | 6.00 |
| 59 | Monroe County | 5.86 |
| 60 | Clinton County | 5.85 |
| 60 | Iroquois County | 5.85 |
| 61 | Henry County | 5.84 |
| 62 | Pulaski County | 5.83 |
| 63 | Livingston County | 5.77 |
| 64 | Lee County | 5.53 |
| 65 | Piatt County | 5.34 |
| 66 | Stark County | 5.32 |
| 67 | Ogle County | 5.26 |
| 68 | Calhoun County | 5.16 |
| 69 | Madison County | 5.13 |
| 70 | Washington County | 5.06 |
| 71 | Gallatin County | 5.04 |
| 72 | Sangamon County | 5.00 |
| 73 | Henderson County | 4.72 |
| 74 | Bureau County | 4.71 |
| 75 | Peoria County | 4.42 |
| 76 | Perry County | 4.35 |
| 77 | McLean County | 4.17 |
| 78 | Jackson County | 4.09 |
| 79 | St. Clair County | 4.07 |
| 80 | LaSalle County | 4.01 |
| 81 | Champaign County | 3.54 |
| 82 | Kankakee County | 3.47 |
| 83 | Lake County | 3.39 |
| 84 | Rock Island County | 3.20 |
| 85 | McHenry County | 3.01 |
| 86 | DeKalb County | 2.97 |
| 86 | Winnebago County | 2.97 |
| 87 | Grundy County | 2.88 |
| 88 | Kane County | 2.81 |
| 89 | Boone County | 2.67 |
| 90 | DuPage County | 2.55 |
| 91 | Will County | 2.37 |
| 92 | Kendall County | 2.26 |
| 93 | Cook County | 2.22 |
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