Ranking of Illinois Counties By Percentage of Population with British Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 49.13K people in Illinois with British ancestry (0.38% of Illinois population). Among all Illinois counties, Piatt County had the highest percentage of its population with British ancestry (1.37%), followed by Stark County (0.96%), and Logan County (0.92%).
The chart and table below shows the top 10 counties with high percentage of its population having British 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 British Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Piatt County | 1.37 |
| 2 | Stark County | 0.96 |
| 3 | Logan County | 0.92 |
| 4 | Christian County | 0.91 |
| 5 | Moultrie County | 0.88 |
| 5 | Woodford County | 0.88 |
| 6 | Sangamon County | 0.84 |
| 7 | Schuyler County | 0.83 |
| 8 | Jo Daviess County | 0.78 |
| 9 | Fayette County | 0.75 |
| 9 | Henry County | 0.75 |
| 10 | Champaign County | 0.73 |
| 11 | De Witt County | 0.72 |
| 12 | Crawford County | 0.71 |
| 12 | Macon County | 0.71 |
| 13 | Peoria County | 0.69 |
| 14 | Calhoun County | 0.68 |
| 14 | Stephenson County | 0.68 |
| 15 | Whiteside County | 0.66 |
| 16 | Clark County | 0.64 |
| 17 | Scott County | 0.63 |
| 18 | Livingston County | 0.62 |
| 19 | Jefferson County | 0.61 |
| 20 | Franklin County | 0.60 |
| 20 | Jackson County | 0.60 |
| 21 | Lee County | 0.56 |
| 21 | Rock Island County | 0.56 |
| 22 | Adams County | 0.55 |
| 22 | Marion County | 0.55 |
| 23 | Clay County | 0.54 |
| 23 | Monroe County | 0.54 |
| 23 | Winnebago County | 0.54 |
| 24 | Randolph County | 0.52 |
| 25 | Tazewell County | 0.51 |
| 25 | Washington County | 0.51 |
| 25 | Williamson County | 0.51 |
| 26 | Richland County | 0.50 |
| 27 | Macoupin County | 0.49 |
| 27 | Mason County | 0.49 |
| 28 | Marshall County | 0.48 |
| 28 | Pike County | 0.48 |
| 28 | Wabash County | 0.48 |
| 29 | Coles County | 0.47 |
| 29 | Grundy County | 0.47 |
| 29 | McHenry County | 0.47 |
| 30 | Lake County | 0.45 |
| 30 | McLean County | 0.45 |
| 31 | Brown County | 0.44 |
| 31 | Iroquois County | 0.44 |
| 31 | St. Clair County | 0.44 |
| 32 | Saline County | 0.43 |
| 33 | Gallatin County | 0.42 |
| 33 | White County | 0.42 |
| 34 | Boone County | 0.41 |
| 34 | DuPage County | 0.41 |
| 34 | Jersey County | 0.41 |
| 35 | Perry County | 0.40 |
| 36 | Massac County | 0.39 |
| 37 | Bond County | 0.38 |
| 38 | Knox County | 0.37 |
| 38 | Madison County | 0.37 |
| 39 | Hancock County | 0.36 |
| 39 | Ogle County | 0.36 |
| 39 | Vermilion County | 0.36 |
| 40 | McDonough County | 0.35 |
| 41 | Kendall County | 0.33 |
| 42 | Edwards County | 0.32 |
| 42 | Kane County | 0.32 |
| 42 | Montgomery County | 0.32 |
| 43 | DeKalb County | 0.31 |
| 44 | Cook County | 0.29 |
| 44 | Fulton County | 0.29 |
| 45 | Effingham County | 0.28 |
| 46 | Edgar County | 0.27 |
| 46 | Ford County | 0.27 |
| 46 | Hamilton County | 0.27 |
| 46 | Menard County | 0.27 |
| 46 | Wayne County | 0.27 |
| 46 | Will County | 0.27 |
| 47 | Union County | 0.26 |
| 48 | Cumberland County | 0.25 |
| 49 | Clinton County | 0.23 |
| 49 | Morgan County | 0.23 |
| 50 | Kankakee County | 0.22 |
| 51 | Greene County | 0.20 |
| 52 | LaSalle County | 0.19 |
| 53 | Johnson County | 0.18 |
| 53 | Lawrence County | 0.18 |
| 54 | Bureau County | 0.17 |
| 54 | Mercer County | 0.17 |
| 54 | Shelby County | 0.17 |
| 55 | Douglas County | 0.15 |
| 55 | Warren County | 0.15 |
| 56 | Putnam County | 0.14 |
| 57 | Carroll County | 0.12 |
| 58 | Cass County | 0.11 |
| 58 | Henderson County | 0.11 |
| 59 | Pulaski County | 0.04 |
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