Ranking of Illinois Counties By Percentage of Population with Scotch Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 68.31K people in Illinois with Scotch Irish ancestry (0.53% of Illinois population). Among all Illinois counties, Hardin County had the highest percentage of its population with Scotch Irish ancestry (4.32%), followed by Bond County (2.29%), and Randolph County (2.10%).
The chart and table below shows the top 10 counties with high percentage of its population having Scotch Irish 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 Scotch Irish Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Hardin County | 4.32 |
| 2 | Bond County | 2.29 |
| 3 | Randolph County | 2.10 |
| 4 | Mercer County | 1.88 |
| 5 | De Witt County | 1.62 |
| 6 | Mason County | 1.51 |
| 7 | Saline County | 1.50 |
| 8 | Washington County | 1.48 |
| 9 | Menard County | 1.47 |
| 10 | Clinton County | 1.44 |
| 10 | Knox County | 1.44 |
| 11 | Wayne County | 1.40 |
| 12 | Stark County | 1.36 |
| 13 | Alexander County | 1.35 |
| 13 | Christian County | 1.35 |
| 13 | White County | 1.35 |
| 14 | Jackson County | 1.32 |
| 15 | Edwards County | 1.27 |
| 16 | Montgomery County | 1.24 |
| 17 | Warren County | 1.21 |
| 18 | Henry County | 1.20 |
| 19 | Scott County | 1.16 |
| 20 | Piatt County | 1.15 |
| 21 | Sangamon County | 1.11 |
| 22 | Franklin County | 1.10 |
| 23 | Schuyler County | 1.09 |
| 24 | Marion County | 1.06 |
| 25 | Adams County | 1.04 |
| 25 | Livingston County | 1.04 |
| 26 | Cumberland County | 1.03 |
| 27 | Grundy County | 1.01 |
| 28 | Tazewell County | 1.00 |
| 29 | Coles County | 0.99 |
| 30 | Williamson County | 0.98 |
| 31 | Logan County | 0.97 |
| 32 | LaSalle County | 0.96 |
| 33 | Macon County | 0.94 |
| 34 | Madison County | 0.93 |
| 34 | Massac County | 0.93 |
| 34 | Morgan County | 0.93 |
| 35 | Champaign County | 0.92 |
| 36 | Effingham County | 0.90 |
| 36 | Jefferson County | 0.90 |
| 36 | Perry County | 0.90 |
| 37 | Hancock County | 0.89 |
| 38 | Crawford County | 0.88 |
| 38 | Ford County | 0.88 |
| 38 | Woodford County | 0.88 |
| 39 | Fayette County | 0.87 |
| 39 | McHenry County | 0.87 |
| 40 | Brown County | 0.85 |
| 40 | Edgar County | 0.85 |
| 41 | Peoria County | 0.84 |
| 42 | Ogle County | 0.80 |
| 43 | Lee County | 0.78 |
| 44 | Whiteside County | 0.75 |
| 45 | Bureau County | 0.71 |
| 45 | Henderson County | 0.71 |
| 45 | Pike County | 0.71 |
| 46 | Jersey County | 0.70 |
| 46 | Wabash County | 0.70 |
| 47 | Fulton County | 0.69 |
| 47 | Putnam County | 0.69 |
| 48 | Pope County | 0.68 |
| 49 | Iroquois County | 0.67 |
| 49 | Monroe County | 0.67 |
| 49 | Rock Island County | 0.67 |
| 50 | Gallatin County | 0.66 |
| 51 | Jo Daviess County | 0.65 |
| 51 | Shelby County | 0.65 |
| 52 | McLean County | 0.64 |
| 53 | St. Clair County | 0.61 |
| 53 | Union County | 0.61 |
| 54 | Marshall County | 0.60 |
| 55 | Vermilion County | 0.58 |
| 55 | Winnebago County | 0.58 |
| 56 | Kankakee County | 0.57 |
| 57 | McDonough County | 0.56 |
| 58 | Clark County | 0.53 |
| 58 | Macoupin County | 0.53 |
| 58 | Moultrie County | 0.53 |
| 59 | DeKalb County | 0.52 |
| 60 | Clay County | 0.50 |
| 60 | Kane County | 0.50 |
| 61 | DuPage County | 0.49 |
| 61 | Lake County | 0.49 |
| 62 | Greene County | 0.47 |
| 63 | Calhoun County | 0.46 |
| 63 | Kendall County | 0.46 |
| 64 | Stephenson County | 0.44 |
| 64 | Will County | 0.44 |
| 65 | Pulaski County | 0.42 |
| 66 | Douglas County | 0.41 |
| 66 | Johnson County | 0.41 |
| 66 | Lawrence County | 0.41 |
| 67 | Jasper County | 0.39 |
| 68 | Cass County | 0.35 |
| 69 | Cook County | 0.28 |
| 70 | Boone County | 0.26 |
| 70 | Carroll County | 0.26 |
| 71 | Richland County | 0.22 |
| 72 | Hamilton County | 0.19 |
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