Data / Rankings / Uninsured rate, under 65 (US model-based estimate) / Counties in Illinois

Counties in Illinois by uninsured rate, under 65 (US model-based estimate)

Douglas County had the highest uninsured rate, under 65 (US model-based estimate) of 102 counties in 2023, at 9.8%. Monroe County had the lowest, at 3.4%. The median was 6% and the figure for Illinois was 7.3%. Source: the U.S. Census Bureau.

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Highest9.8Douglas County
Lowest3.4Monroe County
Median6102 counties
Illinois7.3History

Map of counties, 2023

Adams County: 5 %Alexander County: 6.2 %Bond County: 6.4 %Boone County: 6.8 %Brown County: 5.1 %Bureau County: 5.9 %Calhoun County: 5.3 %Carroll County: 7 %Cass County: 8.6 %Champaign County: 6.5 %Christian County: 5.9 %Clark County: 5.7 %Clay County: 6.5 %Clinton County: 5 %Coles County: 5.9 %Cook County: 9 %Crawford County: 5.4 %Cumberland County: 4.6 %DeKalb County: 6.8 %De Witt County: 5 %Douglas County: 9.8 %DuPage County: 5.8 %Edgar County: 6.4 %Edwards County: 6.4 %Effingham County: 4.8 %Fayette County: 7.4 %Ford County: 6.1 %Franklin County: 7.1 %Fulton County: 6 %Gallatin County: 6.8 %Greene County: 6.6 %Grundy County: 4.4 %Hamilton County: 6.8 %Hancock County: 5.9 %Hardin County: 5.2 %Henderson County: 6.2 %Henry County: 5.4 %Iroquois County: 7.2 %Jackson County: 7.9 %Jasper County: 5.6 %Jefferson County: 6.5 %Jersey County: 5.1 %Jo Daviess County: 6 %Johnson County: 6.5 %Kane County: 8.6 %Kankakee County: 6.2 %Kendall County: 5.4 %Knox County: 6.5 %Lake County: 6.9 %LaSalle County: 5.9 %Lawrence County: 6.7 %Lee County: 5.7 %Livingston County: 6.3 %Logan County: 5 %McDonough County: 5.6 %McHenry County: 5.3 %McLean County: 5.4 %Macon County: 5 %Macoupin County: 6.3 %Madison County: 5.4 %Marion County: 6.8 %Marshall County: 5.8 %Mason County: 6.3 %Massac County: 6.9 %Menard County: 4.9 %Mercer County: 5.4 %Monroe County: 3.4 %Montgomery County: 5.8 %Morgan County: 6.2 %Moultrie County: 8.8 %Ogle County: 5.8 %Peoria County: 5.8 %Perry County: 6.5 %Piatt County: 4.7 %Pike County: 6.9 %Pope County: 6.4 %Pulaski County: 6.2 %Putnam County: 6.1 %Randolph County: 6.9 %Richland County: 6 %Rock Island County: 6.5 %St. Clair County: 5.8 %Saline County: 6.5 %Sangamon County: 5.5 %Schuyler County: 7.1 %Scott County: 4.8 %Shelby County: 5 %Stark County: 6 %Stephenson County: 5.9 %Tazewell County: 5.2 %Union County: 7.6 %Vermilion County: 5.8 %Wabash County: 5.1 %Warren County: 7.6 %Washington County: 4.5 %Wayne County: 7.8 %White County: 6.4 %Whiteside County: 5.9 %Will County: 5.5 %Williamson County: 5.6 %Winnebago County: 7.3 %Woodford County: 5.3 %
  • Under 5.2
  • 5.2 to 5.7
  • 5.7 to 6
  • 6 to 6.4
  • 6.4 to 6.9
  • 6.9 and over
%, 2023. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Douglas County: 9.8 %Douglas County9.8Cook County: 9 %Cook County9Moultrie County: 8.8 %Moultrie County8.8Cass County: 8.6 %Cass County8.6Kane County: 8.6 %Kane County8.6Jackson County: 7.9 %Jackson County7.9Wayne County: 7.8 %Wayne County7.8Union County: 7.6 %Union County7.6Warren County: 7.6 %Warren County7.6Fayette County: 7.4 %Fayette County7.4Winnebago County: 7.3 %Winnebago County7.3Iroquois County: 7.2 %Iroquois County7.2Franklin County: 7.1 %Franklin County7.1Schuyler County: 7.1 %Schuyler County7.1Carroll County: 7 %Carroll County7Lake County: 6.9 %Lake County6.9Massac County: 6.9 %Massac County6.9Pike County: 6.9 %Pike County6.9Randolph County: 6.9 %Randolph County6.9Boone County: 6.8 %Boone County6.8DeKalb County: 6.8 %DeKalb County6.8Gallatin County: 6.8 %Gallatin County6.8Hamilton County: 6.8 %Hamilton County6.8Marion County: 6.8 %Marion County6.8Lawrence County: 6.7 %Lawrence County6.7Greene County: 6.6 %Greene County6.6Champaign County: 6.5 %Champaign County6.5Clay County: 6.5 %Clay County6.5Jefferson County: 6.5 %Jefferson County6.5Johnson County: 6.5 %Johnson County6.5Knox County: 6.5 %Knox County6.5Perry County: 6.5 %Perry County6.5Rock Island County: 6.5 %Rock Island County6.5Saline County: 6.5 %Saline County6.5Bond County: 6.4 %Bond County6.4Edgar County: 6.4 %Edgar County6.4Edwards County: 6.4 %Edwards County6.4Pope County: 6.4 %Pope County6.4White County: 6.4 %White County6.4Livingston County: 6.3 %Livingston County6.3Douglas County: 9.8 %Douglas County9.8Cook County: 9 %Cook County9Moultrie County: 8.8 %Moultrie County8.8Cass County: 8.6 %Cass County8.6Kane County: 8.6 %Kane County8.6Jackson County: 7.9 %Jackson County7.9Wayne County: 7.8 %Wayne County7.8Union County: 7.6 %Union County7.6Warren County: 7.6 %Warren County7.6Fayette County: 7.4 %Fayette County7.4Winnebago County: 7.3 %Winnebago County7.3Iroquois County: 7.2 %Iroquois County7.2Franklin County: 7.1 %Franklin County7.1Schuyler County: 7.1 %Schuyler County7.1Carroll County: 7 %Carroll County7Lake County: 6.9 %Lake County6.9Massac County: 6.9 %Massac County6.9Pike County: 6.9 %Pike County6.9Randolph County: 6.9 %Randolph County6.9Boone County: 6.8 %Boone County6.8DeKalb County: 6.8 %DeKalb County6.8Gallatin County: 6.8 %Gallatin County6.8Hamilton County: 6.8 %Hamilton County6.8Marion County: 6.8 %Marion County6.8Lawrence County: 6.7 %Lawrence County6.7Greene County: 6.6 %Greene County6.6Champaign County: 6.5 %Champaign County6.5Clay County: 6.5 %Clay County6.5Jefferson County: 6.5 %Jefferson County6.5Johnson County: 6.5 %Johnson County6.5Knox County: 6.5 %Knox County6.5Perry County: 6.5 %Perry County6.5Rock Island County: 6.5 %Rock Island County6.5Saline County: 6.5 %Saline County6.5Bond County: 6.4 %Bond County6.4Edgar County: 6.4 %Edgar County6.4Edwards County: 6.4 %Edwards County6.4Pope County: 6.4 %Pope County6.4White County: 6.4 %White County6.4Livingston County: 6.3 %Livingston County6.3
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Douglas County9.8-1.8 pts
2Cook County9-0.7 pts
3Moultrie County8.8+0.1 pts
4Cass County8.6+0.8 pts
4Kane County8.6-0.8 pts
6Jackson County7.9+0.7 pts
7Wayne County7.8-1 pts
8Union County7.6+0.6 pts
8Warren County7.6+0.4 pts
10Fayette County7.4-0.2 pts
11Winnebago County7.3+0.2 pts
12Iroquois County7.2-0.4 pts
13Franklin County7.1-0.6 pts
13Schuyler County7.1-0.9 pts
15Carroll County7-0.6 pts
16Lake County6.9-0.5 pts
16Massac County6.9+0.4 pts
16Pike County6.9-1 pts
16Randolph County6.9-0.4 pts
20Boone County6.8+0.1 pts
20DeKalb County6.8+0.4 pts
20Gallatin County6.8+0.5 pts
20Hamilton County6.8-0.2 pts
20Marion County6.8+0.3 pts
25Lawrence County6.70 pts
26Greene County6.6-0.2 pts
27Champaign County6.5+0.8 pts
27Clay County6.5+0.6 pts
27Jefferson County6.5+0.5 pts
27Johnson County6.5-0.4 pts
27Knox County6.5-0.1 pts
27Perry County6.5+0.3 pts
27Rock Island County6.5-0.9 pts
27Saline County6.5+0.2 pts
35Bond County6.40 pts
35Edgar County6.4+0.2 pts
35Edwards County6.4+0.1 pts
35Pope County6.4+1.2 pts
35White County6.40 pts
40Livingston County6.3+0.5 pts
40Macoupin County6.3-0.2 pts
40Mason County6.3-0.3 pts
43Alexander County6.2+0.5 pts
43Henderson County6.2+0.2 pts
43Kankakee County6.2-0.5 pts
43Morgan County6.2+0.2 pts
43Pulaski County6.2+0.3 pts
48Ford County6.1-0.5 pts
48Putnam County6.1-0.4 pts
50Fulton County6-0.3 pts
50Jo Daviess County6-1.2 pts
50Richland County6-0.5 pts
50Stark County6-1.1 pts
54Bureau County5.9-1.5 pts
54Christian County5.9-0.2 pts
54Coles County5.9-0.7 pts
54Hancock County5.90 pts
54LaSalle County5.9-0.3 pts
54Stephenson County5.9+0.4 pts
54Whiteside County5.90 pts
61DuPage County5.8-0.1 pts
61Marshall County5.8+0.1 pts
61Montgomery County5.8-0.9 pts
61Ogle County5.8-0.3 pts
61Peoria County5.80 pts
61St. Clair County5.8+0.5 pts
61Vermilion County5.8+0.4 pts
68Clark County5.7-0.2 pts
68Lee County5.7+0.1 pts
70Jasper County5.6-0.4 pts
70McDonough County5.6-0.4 pts
70Williamson County5.6+0.6 pts
73Sangamon County5.5+0.3 pts
73Will County5.5-0.4 pts
75Crawford County5.4-0.5 pts
75Henry County5.4-0.6 pts
75Kendall County5.40 pts
75Madison County5.4-0.1 pts
75McLean County5.4+0.5 pts
75Mercer County5.4-0.2 pts
81Calhoun County5.3-0.1 pts
81McHenry County5.3-0.6 pts
81Woodford County5.3+0.2 pts
84Hardin County5.2-0.5 pts
84Tazewell County5.2+0.2 pts
86Brown County5.1+1.3 pts
86Jersey County5.1-0.1 pts
86Wabash County5.1-0.7 pts
89Adams County5-0.6 pts
89Clinton County5-0.7 pts
89De Witt County5-0.7 pts
89Logan County5-0.4 pts
89Macon County5-0.4 pts
89Shelby County5-0.7 pts
95Menard County4.9+0.1 pts
96Effingham County4.80 pts
96Scott County4.8-0.1 pts
98Piatt County4.7-0.4 pts
99Cumberland County4.6-0.4 pts
100Washington County4.5-0.3 pts
101Grundy County4.4-0.3 pts
102Monroe County3.4-0.4 pts

Other periods

About this ranking

People under 65 without health insurance coverage of any kind, as a percentage of all people under 65. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. People 65 and over are left out because nearly all of them have Medicare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties (Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2023,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, under 65 (US model-based estimate), 2023
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-under-65/illinois-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2023-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, under 65 (US model-based estimate)?

Douglas County, with 9.8% in 2023, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, under 65 (US model-based estimate)?

Monroe County, with 3.4% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, under 65, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, under 65 (US model-based estimate): other rankings

Counties in Illinois: more rankings