Ranking of Illinois Counties By White Alone Population Aged 25 years and above with an Educational attainment of High School Graduate or Equivalent in 2021 (ACS-5Yrs)
Based on the US Census ACS-5Yrs estimates, in 2021, the Illinois White Alone population (aged 25 years and above) who had an educational attainment of High School Graduate or Equivalent was 1,587,551. Among all Illinois counties, Cook County had the highest White Alone population (aged 25 years and above) with an educational attainment of High School Graduate or Equivalent (404,501), followed by DuPage County (90,687), and Will County (90,190).
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 | Number of People |
|---|---|---|
| 1 | Cook County | 404501 |
| 2 | DuPage County | 90687 |
| 3 | Will County | 90190 |
| 4 | Lake County | 66367 |
| 5 | Kane County | 54320 |
| 6 | McHenry County | 50379 |
| 7 | Winnebago County | 48501 |
| 8 | Madison County | 48293 |
| 9 | Sangamon County | 31972 |
| 10 | St. Clair County | 29951 |
| 11 | Tazewell County | 27119 |
| 12 | Peoria County | 26183 |
| 13 | LaSalle County | 25838 |
| 14 | Rock Island County | 24743 |
| 15 | McLean County | 21358 |
| 16 | Macon County | 20712 |
| 17 | Kankakee County | 20308 |
| 18 | Champaign County | 19498 |
| 19 | Vermilion County | 18045 |
| 20 | Adams County | 15308 |
| 21 | Kendall County | 15232 |
| 22 | Whiteside County | 13979 |
| 23 | DeKalb County | 13373 |
| 24 | Williamson County | 13132 |
| 25 | Macoupin County | 12579 |
| 26 | Henry County | 11546 |
| 27 | Ogle County | 11513 |
| 28 | Knox County | 10908 |
| 29 | Grundy County | 10583 |
| 30 | Boone County | 10433 |
| 31 | Livingston County | 10042 |
| 32 | Christian County | 9980 |
| 33 | Coles County | 9491 |
| 34 | Stephenson County | 9480 |
| 35 | Fulton County | 8724 |
| 36 | Marion County | 8701 |
| 37 | Franklin County | 8511 |
| 38 | Morgan County | 8345 |
| 39 | Bureau County | 7960 |
| 40 | Lee County | 7890 |
| 41 | Montgomery County | 7864 |
| 42 | Clinton County | 7849 |
| 43 | Randolph County | 7654 |
| 44 | Effingham County | 7613 |
| 45 | Jefferson County | 7488 |
| 46 | Iroquois County | 7197 |
| 47 | Woodford County | 7171 |
| 48 | Logan County | 6557 |
| 49 | Shelby County | 6426 |
| 50 | Monroe County | 6111 |
| 51 | Jackson County | 5954 |
| 52 | Fayette County | 5851 |
| 53 | Jo Daviess County | 5731 |
| 54 | Jersey County | 5475 |
| 55 | McDonough County | 5215 |
| 56 | Perry County | 4836 |
| 57 | Saline County | 4728 |
| 58 | Edgar County | 4616 |
| 59 | De Witt County | 4506 |
| 60 | Hancock County | 4339 |
| 61 | Douglas County | 4334 |
| 62 | Mercer County | 4233 |
| 62 | Pike County | 4233 |
| 63 | Union County | 4116 |
| 64 | Clark County | 3985 |
| 65 | Carroll County | 3921 |
| 65 | Wayne County | 3921 |
| 66 | Mason County | 3815 |
| 67 | Greene County | 3781 |
| 68 | Crawford County | 3717 |
| 69 | Piatt County | 3716 |
| 70 | Bond County | 3636 |
| 71 | Clay County | 3566 |
| 72 | Lawrence County | 3500 |
| 73 | Warren County | 3422 |
| 74 | Cass County | 3384 |
| 75 | Richland County | 3334 |
| 76 | White County | 3312 |
| 77 | Washington County | 3263 |
| 78 | Massac County | 3262 |
| 79 | Ford County | 3261 |
| 80 | Marshall County | 3247 |
| 81 | Moultrie County | 3211 |
| 82 | Menard County | 2888 |
| 83 | Cumberland County | 2809 |
| 84 | Johnson County | 2724 |
| 85 | Wabash County | 2533 |
| 86 | Jasper County | 2435 |
| 87 | Henderson County | 2051 |
| 88 | Schuyler County | 1898 |
| 89 | Hamilton County | 1769 |
| 90 | Putnam County | 1580 |
| 91 | Scott County | 1539 |
| 92 | Stark County | 1469 |
| 93 | Edwards County | 1468 |
| 94 | Gallatin County | 1406 |
| 95 | Calhoun County | 1332 |
| 96 | Brown County | 1297 |
| 97 | Pope County | 1151 |
| 98 | Alexander County | 1125 |
| 99 | Pulaski County | 1083 |
| 100 | Hardin County | 968 |