# Counties in Illinois by high school graduate or higher, population 25 and over, 2024

All 102 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `high_school_graduate_share`
- Unit: %
- Definition: People aged 25 and over who hold a regular high school diploma, a GED or alternative credential, or any higher level of education, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat)
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/high-school-graduate-or-higher/illinois-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Piatt County | 96.3 |
| 2 | Monroe County | 96 |
| 3 | McLean County | 95.9 |
| 4 | Champaign County | 95.1 |
| 5 | Menard County | 95 |
| 6 | Shelby County | 94.9 |
| 7 | Woodford County | 94.8 |
| 8 | Calhoun County | 94.3 |
| 9 | Tazewell County | 94.3 |
| 10 | McDonough County | 94.2 |
| 10 | Putnam County | 94.2 |
| 12 | Jersey County | 94.1 |
| 13 | Cumberland County | 94.1 |
| 13 | Sangamon County | 94.1 |
| 15 | Kendall County | 94 |
| 16 | De Witt County | 94 |
| 17 | Mercer County | 93.9 |
| 18 | Madison County | 93.9 |
| 19 | Adams County | 93.8 |
| 20 | Grundy County | 93.8 |
| 21 | McHenry County | 93.7 |
| 22 | Hancock County | 93.6 |
| 23 | St. Clair County | 93.5 |
| 24 | Peoria County | 93.4 |
| 25 | Jo Daviess County | 93.2 |
| 26 | Macon County | 93.1 |
| 27 | Effingham County | 93 |
| 28 | Mason County | 93 |
| 29 | DuPage County | 93 |
| 30 | Washington County | 92.9 |
| 31 | Jackson County | 92.9 |
| 32 | Wabash County | 92.8 |
| 33 | Williamson County | 92.8 |
| 34 | Stark County | 92.8 |
| 35 | Schuyler County | 92.7 |
| 36 | Logan County | 92.7 |
| 37 | Pope County | 92.6 |
| 38 | Stephenson County | 92.6 |
| 39 | Clark County | 92.5 |
| 40 | Henry County | 92.4 |
| 41 | Jefferson County | 92.4 |
| 41 | Scott County | 92.4 |
| 43 | Clinton County | 92.3 |
| 44 | DeKalb County | 92.2 |
| 45 | Edwards County | 92 |
| 46 | Hardin County | 91.9 |
| 47 | Whiteside County | 91.9 |
| 48 | LaSalle County | 91.8 |
| 49 | Will County | 91.8 |
| 50 | Jasper County | 91.8 |
| 51 | Hamilton County | 91.7 |
| 52 | Ford County | 91.6 |
| 52 | Kankakee County | 91.6 |
| 54 | Marshall County | 91.5 |
| 55 | Richland County | 91.5 |
| 56 | Bureau County | 91.5 |
| 57 | Pike County | 91.4 |
| 58 | Macoupin County | 91.4 |
| 59 | Greene County | 91.2 |
| 60 | Lee County | 91.2 |
| 61 | Ogle County | 91.1 |
| 62 | Coles County | 91.1 |
| 63 | Vermilion County | 91 |
| 64 | Henderson County | 90.9 |
| 65 | Christian County | 90.9 |
| 66 | Marion County | 90.7 |
| 67 | Massac County | 90.7 |
| 68 | Rock Island County | 90.7 |
| 69 | Fulton County | 90.6 |
| 70 | Lake County | 90.6 |
| 71 | Crawford County | 90.5 |
| 72 | Clay County | 90.5 |
| 73 | Montgomery County | 90.2 |
| 74 | Bond County | 90.1 |
| 75 | Knox County | 89.9 |
| 76 | Saline County | 89.7 |
| 77 | Wayne County | 89.6 |
| 78 | Franklin County | 89.6 |
| 79 | Morgan County | 89.5 |
| 80 | Edgar County | 89.2 |
| 81 | Iroquois County | 89.1 |
| 82 | White County | 88.9 |
| 83 | Carroll County | 88.9 |
| 84 | Winnebago County | 88.8 |
| 85 | Livingston County | 88.6 |
| 86 | Cook County | 88.6 |
| 87 | Pulaski County | 87.6 |
| 88 | Douglas County | 87.5 |
| 89 | Union County | 87.5 |
| 90 | Alexander County | 87.5 |
| 91 | Kane County | 87.4 |
| 92 | Fayette County | 87.3 |
| 93 | Randolph County | 87.1 |
| 94 | Warren County | 87.1 |
| 95 | Lawrence County | 87 |
| 96 | Gallatin County | 86.8 |
| 97 | Cass County | 86.4 |
| 98 | Boone County | 86.2 |
| 99 | Perry County | 85.9 |
| 100 | Moultrie County | 85.6 |
| 101 | Johnson County | 85.4 |
| 102 | Brown County | 76.7 |