Ranking of Illinois Counties By Percentage of White Alone Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the Illinois White Alone population (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 7.31%. Among all Illinois counties, Douglas County had the highest percentage of its White Alone population (aged 25 years and above) with an educational attainment of Less than High School Diploma (15.89%), followed by Alexander County (14.96%), and Hardin County (14.90%).
The chart below shows the top 10 Illinois counties, and the table below shows the ranking of all Illinois counties.
You can see similar information for other educational attainments, and for other races and ethnicities.
You can also see similar information for other states and for the United States.
| Rank | County | Percentage of Population (Aged 25yrs+) (%) |
|---|---|---|
| 1 | Douglas County | 15.89 |
| 2 | Alexander County | 14.96 |
| 3 | Hardin County | 14.90 |
| 4 | Moultrie County | 13.42 |
| 5 | Johnson County | 13.18 |
| 6 | Perry County | 13.05 |
| 7 | Massac County | 12.85 |
| 8 | Cass County | 12.74 |
| 9 | Gallatin County | 12.18 |
| 10 | Fayette County | 12.08 |
| 11 | Wayne County | 11.99 |
| 12 | Hamilton County | 11.92 |
| 13 | Saline County | 11.77 |
| 14 | Edgar County | 11.44 |
| 15 | Clay County | 11.33 |
| 16 | Brown County | 11.30 |
| 17 | Crawford County | 10.87 |
| 18 | Pope County | 10.83 |
| 19 | Lawrence County | 10.76 |
| 20 | Marion County | 10.71 |
| 21 | Montgomery County | 10.58 |
| 22 | Franklin County | 10.52 |
| 23 | Union County | 10.47 |
| 24 | Carroll County | 10.35 |
| 25 | Randolph County | 10.32 |
| 26 | Boone County | 10.29 |
| 27 | Stark County | 10.24 |
| 28 | Christian County | 10.19 |
| 29 | Iroquois County | 10.10 |
| 30 | Bond County | 9.98 |
| 31 | White County | 9.97 |
| 32 | Pulaski County | 9.96 |
| 33 | Warren County | 9.95 |
| 34 | Winnebago County | 9.64 |
| 35 | Morgan County | 9.53 |
| 36 | Jefferson County | 9.26 |
| 37 | Greene County | 9.19 |
| 38 | Mason County | 9.01 |
| 39 | Fulton County | 9.00 |
| 40 | Knox County | 8.67 |
| 41 | Macoupin County | 8.59 |
| 42 | Lee County | 8.57 |
| 43 | Bureau County | 8.42 |
| 44 | Cook County | 8.37 |
| 45 | Wabash County | 8.30 |
| 46 | Vermilion County | 8.22 |
| 47 | Kane County | 8.16 |
| 48 | Kankakee County | 8.13 |
| 48 | Ogle County | 8.13 |
| 49 | Pike County | 8.01 |
| 50 | Edwards County | 7.95 |
| 51 | Whiteside County | 7.94 |
| 52 | Livingston County | 7.91 |
| 53 | Jasper County | 7.80 |
| 54 | Richland County | 7.79 |
| 55 | Henderson County | 7.73 |
| 55 | LaSalle County | 7.73 |
| 56 | Jackson County | 7.60 |
| 57 | Coles County | 7.59 |
| 57 | Rock Island County | 7.59 |
| 58 | Jersey County | 7.54 |
| 59 | Ford County | 7.42 |
| 60 | Calhoun County | 7.41 |
| 61 | Jo Daviess County | 7.40 |
| 62 | Logan County | 7.30 |
| 63 | Clinton County | 7.28 |
| 64 | Marshall County | 7.16 |
| 65 | Washington County | 7.07 |
| 66 | Schuyler County | 7.05 |
| 67 | Mercer County | 6.99 |
| 68 | Stephenson County | 6.96 |
| 69 | Macon County | 6.88 |
| 69 | Shelby County | 6.88 |
| 70 | Adams County | 6.83 |
| 71 | Clark County | 6.80 |
| 72 | Williamson County | 6.61 |
| 73 | Effingham County | 6.56 |
| 74 | Henry County | 6.45 |
| 75 | Cumberland County | 6.40 |
| 76 | Hancock County | 6.37 |
| 77 | Tazewell County | 6.36 |
| 78 | Madison County | 6.35 |
| 79 | De Witt County | 6.25 |
| 80 | Piatt County | 6.17 |
| 81 | Putnam County | 6.11 |
| 82 | Scott County | 6.04 |
| 83 | Will County | 6.03 |
| 84 | Lake County | 5.91 |
| 85 | Peoria County | 5.75 |
| 86 | Woodford County | 5.71 |
| 87 | Sangamon County | 5.68 |
| 88 | DeKalb County | 5.65 |
| 89 | Grundy County | 5.62 |
| 90 | McHenry County | 5.46 |
| 91 | St. Clair County | 5.30 |
| 92 | McDonough County | 5.14 |
| 93 | Kendall County | 4.64 |
| 94 | DuPage County | 4.53 |
| 95 | Monroe County | 4.46 |
| 96 | Menard County | 4.07 |
| 97 | Champaign County | 3.62 |
| 98 | McLean County | 3.34 |
