Ranking of Illinois Counties By Number of People and Percentage of Population With Medicaid Health Insurance Coverage in 2021 (ACS-5Yrs)
Updated on October 26, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, the percentage of the Illinois population who had Medicaid health insurance coverage was 18.94% (i.e. 2,395,420 people). Percentagewise, among all Illinois counties, Alexander County had the highest percentage of its population with Medicaid health insurance coverage (35.87%), followed by Pulaski County (33.84%), and Pope County (32.45%).
In numerical terms, Cook County had the highest number of people with Medicaid health insurance coverage (1,109,042), followed by DuPage County (100,770), and Will County (95,408).
The charts below shows the top 10 counties by the number of people and percentage of the population with Medicaid health insurance coverage. The tables below shows the ranking for all Illinois counties.
You can see similar information for other types of health insurance coverages.
You can also see similar information for other states.
Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates.
Ranking of Illinois Counties By Percentage of Population With
Medicaid Health Insurance Coverage in 2021
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| Rank | County | Percentage of Population (%) |
|---|---|---|
| 1 | Alexander County | 35.87 |
| 2 | Pulaski County | 33.84 |
| 3 | Pope County | 32.45 |
| 4 | Saline County | 30.82 |
| 5 | Franklin County | 30.20 |
| 6 | Vermilion County | 29.97 |
| 7 | Marion County | 29.90 |
| 8 | Perry County | 29.43 |
| 9 | Union County | 27.74 |
| 10 | Gallatin County | 27.73 |
| 11 | Hardin County | 27.47 |
| 12 | Greene County | 27.01 |
| 13 | Jefferson County | 26.92 |
| 14 | Richland County | 26.72 |
| 15 | Ford County | 26.38 |
| 16 | Clay County | 26.31 |
| 17 | Fayette County | 26.01 |
| 18 | Coles County | 25.94 |
| 19 | Wabash County | 25.83 |
| 20 | Winnebago County | 25.51 |
| 21 | Pike County | 25.45 |
| 22 | White County | 25.03 |
| 23 | Stephenson County | 24.88 |
| 24 | Macoupin County | 24.70 |
| 25 | Jackson County | 24.09 |
| 26 | Mason County | 23.87 |
| 26 | Massac County | 23.87 |
| 27 | Macon County | 23.71 |
| 28 | Lawrence County | 23.60 |
| 29 | Fulton County | 23.45 |
| 30 | Christian County | 23.40 |
| 31 | Edgar County | 23.30 |
| 32 | Warren County | 23.28 |
| 33 | Johnson County | 23.26 |
| 33 | Knox County | 23.26 |
| 34 | Cass County | 23.02 |
| 35 | Iroquois County | 22.92 |
| 36 | Wayne County | 22.67 |
| 37 | Morgan County | 22.48 |
| 38 | Crawford County | 22.43 |
| 39 | Peoria County | 22.24 |
| 40 | Williamson County | 22.22 |
| 41 | St. Clair County | 22.08 |
| 42 | Scott County | 22.01 |
| 43 | Kankakee County | 21.91 |
| 44 | Rock Island County | 21.82 |
| 45 | Schuyler County | 21.78 |
| 46 | Stark County | 21.49 |
| 47 | Edwards County | 21.36 |
| 48 | Bond County | 21.34 |
| 49 | Cook County | 21.25 |
| 50 | LaSalle County | 21.13 |
| 51 | Randolph County | 20.61 |
| 52 | Sangamon County | 20.33 |
| 53 | Bureau County | 20.28 |
| 53 | Jasper County | 20.28 |
| 54 | Montgomery County | 20.10 |
| 55 | Effingham County | 20.07 |
| 56 | Boone County | 20.06 |
| 57 | McDonough County | 19.67 |
| 58 | Clark County | 19.64 |
| 59 | Brown County | 19.56 |
| 60 | Livingston County | 19.50 |
| 61 | Logan County | 19.29 |
| 62 | Adams County | 19.28 |
| 63 | Hamilton County | 19.13 |
| 64 | Whiteside County | 19.09 |
| 65 | Hancock County | 18.93 |
| 66 | DeKalb County | 18.91 |
| 67 | Carroll County | 18.72 |
| 68 | Shelby County | 18.54 |
| 69 | Henderson County | 17.89 |
| 70 | Lee County | 17.77 |
| 71 | Cumberland County | 17.75 |
| 72 | Henry County | 17.65 |
| 73 | Marshall County | 17.52 |
| 74 | Calhoun County | 17.48 |
| 75 | Ogle County | 17.45 |
| 76 | Madison County | 17.37 |
| 77 | Tazewell County | 17.22 |
| 78 | Douglas County | 17.07 |
| 79 | Moultrie County | 17.02 |
| 80 | Mercer County | 16.81 |
| 81 | De Witt County | 16.61 |
| 82 | Champaign County | 16.51 |
| 83 | Kane County | 16.00 |
| 84 | Menard County | 15.58 |
| 85 | Putnam County | 15.12 |
| 86 | Jo Daviess County | 14.76 |
| 87 | Washington County | 14.02 |
| 88 | Will County | 13.84 |
| 89 | Jersey County | 13.77 |
| 90 | Lake County | 13.67 |
| 91 | Clinton County | 13.48 |
| 92 | Grundy County | 13.43 |
| 93 | McLean County | 12.94 |
| 94 | Woodford County | 12.36 |
| 95 | Kendall County | 11.52 |
| 96 | Piatt County | 11.31 |
| 97 | McHenry County | 11.13 |
| 98 | DuPage County | 10.86 |
| 99 | Monroe County | 8.47 |
Ranking of Illinois Counties By Number of People With
Medicaid Health Insurance Coverage in 2021
Items per page:
25
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| Rank | County | Number of People |
|---|---|---|
| 1 | Cook County | 1109042 |
| 2 | DuPage County | 100770 |
| 3 | Will County | 95408 |
| 4 | Lake County | 95314 |
| 5 | Kane County | 82439 |
| 6 | Winnebago County | 72036 |
| 7 | St. Clair County | 55750 |
| 8 | Madison County | 45791 |
| 9 | Peoria County | 40087 |
| 10 | Sangamon County | 39593 |
| 11 | McHenry County | 34421 |
| 12 | Champaign County | 33846 |
| 13 | Rock Island County | 30998 |
| 14 | Macon County | 24218 |
| 15 | Kankakee County | 23316 |
| 16 | LaSalle County | 22610 |
| 17 | Tazewell County | 22316 |
| 18 | McLean County | 22062 |
| 19 | Vermilion County | 21714 |
| 20 | DeKalb County | 18953 |
| 21 | Kendall County | 15021 |
| 22 | Williamson County | 14478 |
| 23 | Jackson County | 12806 |
| 24 | Adams County | 12485 |
| 25 | Coles County | 12157 |
| 26 | Franklin County | 11352 |
| 27 | Marion County | 11103 |
| 28 | Macoupin County | 11049 |
| 29 | Knox County | 11017 |
| 30 | Stephenson County | 10957 |
| 31 | Boone County | 10672 |
| 32 | Whiteside County | 10524 |
| 33 | Jefferson County | 9545 |
| 34 | Ogle County | 8955 |
| 35 | Henry County | 8598 |
| 36 | Christian County | 7561 |
| 37 | Fulton County | 7425 |
| 38 | Saline County | 7227 |
| 39 | Morgan County | 7028 |
| 40 | Grundy County | 6983 |
| 41 | Effingham County | 6863 |
| 42 | Bureau County | 6691 |
| 43 | Livingston County | 6608 |
| 44 | Iroquois County | 6181 |
| 45 | Randolph County | 5585 |
| 46 | Lee County | 5583 |
| 47 | Perry County | 5475 |
| 48 | McDonough County | 5378 |
| 49 | Fayette County | 5240 |
| 50 | Montgomery County | 5146 |
| 51 | Logan County | 4884 |
| 52 | Union County | 4735 |
| 53 | Clinton County | 4717 |
| 54 | Woodford County | 4700 |
| 55 | Richland County | 4188 |
| 56 | Shelby County | 3891 |
| 57 | Edgar County | 3888 |
| 58 | Warren County | 3886 |
| 59 | Crawford County | 3757 |
| 60 | Pike County | 3698 |
| 61 | Wayne County | 3671 |
| 62 | Ford County | 3486 |
| 63 | Clay County | 3462 |
| 64 | White County | 3413 |
| 65 | Massac County | 3358 |
| 66 | Douglas County | 3339 |
| 67 | Hancock County | 3324 |
| 68 | Bond County | 3312 |
| 69 | Jo Daviess County | 3225 |
| 70 | Greene County | 3218 |
| 71 | Mason County | 3113 |
| 72 | Lawrence County | 3104 |
| 73 | Clark County | 3019 |
| 74 | Cass County | 2978 |
| 75 | Wabash County | 2928 |
| 76 | Jersey County | 2920 |
| 76 | Monroe County | 2920 |
| 77 | Carroll County | 2765 |
| 78 | Mercer County | 2618 |
| 79 | Johnson County | 2567 |
| 80 | De Witt County | 2554 |
| 81 | Moultrie County | 2444 |
| 82 | Marshall County | 2020 |
| 83 | Alexander County | 1931 |
| 84 | Washington County | 1912 |
| 85 | Menard County | 1901 |
| 86 | Jasper County | 1879 |
| 86 | Piatt County | 1879 |
| 87 | Cumberland County | 1848 |
| 88 | Pulaski County | 1779 |
| 89 | Hamilton County | 1522 |
| 90 | Schuyler County | 1499 |
| 91 | Gallatin County | 1397 |
| 92 | Edwards County | 1326 |
| 93 | Pope County | 1194 |
| 94 | Henderson County | 1151 |
| 95 | Stark County | 1148 |
| 96 | Scott County | 1073 |
| 97 | Hardin County | 997 |
| 98 | Brown County | 874 |
| 99 | Putnam County | 851 |
| 100 | Calhoun County | 780 |