Data / Rankings / Uninsured rate, ages 18 to 64 (US model-based estimate) / Counties in Illinois

Counties in Illinois by uninsured rate, ages 18 to 64 (US model-based estimate)

Douglas County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 102 counties in 2023, at 11.2%. Monroe County had the lowest, at 3.9%. The median was 7% and the figure for Illinois was 8.8%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest11.2Douglas County
Lowest3.9Monroe County
Median7102 counties
Illinois8.8History

Map of counties, 2023

Adams County: 5.8 %Alexander County: 7.3 %Bond County: 7.4 %Boone County: 8 %Brown County: 5.8 %Bureau County: 6.8 %Calhoun County: 6.1 %Carroll County: 7.9 %Cass County: 10.4 %Champaign County: 7.8 %Christian County: 6.9 %Clark County: 6.6 %Clay County: 7.7 %Clinton County: 6 %Coles County: 6.8 %Cook County: 10.8 %Crawford County: 6.3 %Cumberland County: 5.5 %DeKalb County: 8 %De Witt County: 5.7 %Douglas County: 11.2 %DuPage County: 7 %Edgar County: 7.4 %Edwards County: 7.4 %Effingham County: 5.9 %Fayette County: 8.4 %Ford County: 7.2 %Franklin County: 8.4 %Fulton County: 7.1 %Gallatin County: 7.7 %Greene County: 7.6 %Grundy County: 5.2 %Hamilton County: 7.8 %Hancock County: 6.8 %Hardin County: 6 %Henderson County: 7.1 %Henry County: 6.4 %Iroquois County: 8.5 %Jackson County: 9.2 %Jasper County: 6.6 %Jefferson County: 7.7 %Jersey County: 5.9 %Jo Daviess County: 6.9 %Johnson County: 7.4 %Kane County: 10.5 %Kankakee County: 7.4 %Kendall County: 6.7 %Knox County: 7.8 %Lake County: 8.4 %LaSalle County: 7 %Lawrence County: 7.9 %Lee County: 6.6 %Livingston County: 7.3 %Logan County: 5.8 %McDonough County: 6.4 %McHenry County: 6.3 %McLean County: 6.5 %Macon County: 6 %Macoupin County: 7.2 %Madison County: 6.5 %Marion County: 8.2 %Marshall County: 6.6 %Mason County: 7.3 %Massac County: 8.2 %Menard County: 5.7 %Mercer County: 6.1 %Monroe County: 3.9 %Montgomery County: 6.8 %Morgan County: 7.3 %Moultrie County: 10 %Ogle County: 6.7 %Peoria County: 7 %Perry County: 7.5 %Piatt County: 5.3 %Pike County: 8.2 %Pope County: 7 %Pulaski County: 7.3 %Putnam County: 7 %Randolph County: 8.3 %Richland County: 7.1 %Rock Island County: 7.7 %St. Clair County: 6.9 %Saline County: 7.6 %Sangamon County: 6.6 %Schuyler County: 8 %Scott County: 5.4 %Shelby County: 5.8 %Stark County: 6.9 %Stephenson County: 7 %Tazewell County: 6.2 %Union County: 8.8 %Vermilion County: 7.1 %Wabash County: 5.9 %Warren County: 8.8 %Washington County: 5.1 %Wayne County: 9.2 %White County: 7.4 %Whiteside County: 7 %Will County: 6.6 %Williamson County: 6.6 %Winnebago County: 8.8 %Woodford County: 6.2 %
  • Under 6
  • 6 to 6.6
  • 6.6 to 7
  • 7 to 7.4
  • 7.4 to 8.2
  • 8.2 and over
%, 2023. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Douglas County: 11.2 %Douglas County11.2Cook County: 10.8 %Cook County10.8Kane County: 10.5 %Kane County10.5Cass County: 10.4 %Cass County10.4Moultrie County: 10 %Moultrie County10Jackson County: 9.2 %Jackson County9.2Wayne County: 9.2 %Wayne County9.2Union County: 8.8 %Union County8.8Warren County: 8.8 %Warren County8.8Winnebago County: 8.8 %Winnebago County8.8Iroquois County: 8.5 %Iroquois County8.5Fayette County: 8.4 %Fayette County8.4Franklin County: 8.4 %Franklin County8.4Lake County: 8.4 %Lake County8.4Randolph County: 8.3 %Randolph County8.3Marion County: 8.2 %Marion County8.2Massac County: 8.2 %Massac County8.2Pike County: 8.2 %Pike County8.2Boone County: 8 %Boone County8DeKalb County: 8 %DeKalb County8Schuyler County: 8 %Schuyler County8Carroll County: 7.9 %Carroll County7.9Lawrence County: 7.9 %Lawrence County7.9Champaign County: 7.8 %Champaign County7.8Hamilton County: 7.8 %Hamilton County7.8Knox County: 7.8 %Knox County7.8Clay County: 7.7 %Clay County7.7Gallatin County: 7.7 %Gallatin County7.7Jefferson County: 7.7 %Jefferson County7.7Rock Island County: 7.7 %Rock Island County7.7Greene County: 7.6 %Greene County7.6Saline County: 7.6 %Saline County7.6Perry County: 7.5 %Perry County7.5Bond County: 7.4 %Bond County7.4Edgar County: 7.4 %Edgar County7.4Edwards County: 7.4 %Edwards County7.4Johnson County: 7.4 %Johnson County7.4Kankakee County: 7.4 %Kankakee County7.4White County: 7.4 %White County7.4Alexander County: 7.3 %Alexander County7.3Douglas County: 11.2 %Douglas County11.2Cook County: 10.8 %Cook County10.8Kane County: 10.5 %Kane County10.5Cass County: 10.4 %Cass County10.4Moultrie County: 10 %Moultrie County10Jackson County: 9.2 %Jackson County9.2Wayne County: 9.2 %Wayne County9.2Union County: 8.8 %Union County8.8Warren County: 8.8 %Warren County8.8Winnebago County: 8.8 %Winnebago County8.8Iroquois County: 8.5 %Iroquois County8.5Fayette County: 8.4 %Fayette County8.4Franklin County: 8.4 %Franklin County8.4Lake County: 8.4 %Lake County8.4Randolph County: 8.3 %Randolph County8.3Marion County: 8.2 %Marion County8.2Massac County: 8.2 %Massac County8.2Pike County: 8.2 %Pike County8.2Boone County: 8 %Boone County8DeKalb County: 8 %DeKalb County8Schuyler County: 8 %Schuyler County8Carroll County: 7.9 %Carroll County7.9Lawrence County: 7.9 %Lawrence County7.9Champaign County: 7.8 %Champaign County7.8Hamilton County: 7.8 %Hamilton County7.8Knox County: 7.8 %Knox County7.8Clay County: 7.7 %Clay County7.7Gallatin County: 7.7 %Gallatin County7.7Jefferson County: 7.7 %Jefferson County7.7Rock Island County: 7.7 %Rock Island County7.7Greene County: 7.6 %Greene County7.6Saline County: 7.6 %Saline County7.6Perry County: 7.5 %Perry County7.5Bond County: 7.4 %Bond County7.4Edgar County: 7.4 %Edgar County7.4Edwards County: 7.4 %Edwards County7.4Johnson County: 7.4 %Johnson County7.4Kankakee County: 7.4 %Kankakee County7.4White County: 7.4 %White County7.4Alexander County: 7.3 %Alexander County7.3
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Douglas County11.2-1.7 pts
2Cook County10.8-1.1 pts
3Kane County10.5-1.1 pts
4Cass County10.4+0.9 pts
5Moultrie County10+0.2 pts
6Jackson County9.2+0.7 pts
6Wayne County9.2-1.1 pts
8Union County8.8+0.6 pts
8Warren County8.8+0.4 pts
8Winnebago County8.8+0.2 pts
11Iroquois County8.5-0.3 pts
12Fayette County8.4-0.6 pts
12Franklin County8.4-0.7 pts
12Lake County8.4-0.4 pts
15Randolph County8.3-0.3 pts
16Marion County8.2+0.2 pts
16Massac County8.2+0.5 pts
16Pike County8.2-1.1 pts
19Boone County8-0.1 pts
19DeKalb County8+0.4 pts
19Schuyler County8-1.3 pts
22Carroll County7.9-0.5 pts
22Lawrence County7.90 pts
24Champaign County7.8+1.2 pts
24Hamilton County7.8+0.3 pts
24Knox County7.8+0.1 pts
27Clay County7.7+0.7 pts
27Gallatin County7.7+0.4 pts
27Jefferson County7.7+0.8 pts
27Rock Island County7.7-1.2 pts
31Greene County7.6-0.2 pts
31Saline County7.6+0.3 pts
33Perry County7.5+0.3 pts
34Bond County7.4-0.1 pts
34Edgar County7.4+0.2 pts
34Edwards County7.4+0.2 pts
34Johnson County7.4-0.4 pts
34Kankakee County7.4-0.4 pts
34White County7.40 pts
40Alexander County7.3+0.5 pts
40Livingston County7.3+0.6 pts
40Mason County7.3-0.2 pts
40Morgan County7.3+0.5 pts
40Pulaski County7.3+0.4 pts
45Ford County7.2-0.4 pts
45Macoupin County7.2-0.4 pts
47Fulton County7.1-0.2 pts
47Henderson County7.1+0.3 pts
47Richland County7.1-0.6 pts
47Vermilion County7.1+0.5 pts
51DuPage County7-0.1 pts
51LaSalle County7-0.4 pts
51Peoria County7-0.1 pts
51Pope County7+1.4 pts
51Putnam County7-0.2 pts
51Stephenson County7+0.5 pts
51Whiteside County7+0.1 pts
58Christian County6.9-0.1 pts
58Jo Daviess County6.9-1.3 pts
58St. Clair County6.9+0.7 pts
58Stark County6.9-1.4 pts
62Bureau County6.8-1.7 pts
62Coles County6.8-0.9 pts
62Hancock County6.8+0.1 pts
62Montgomery County6.8-0.9 pts
66Kendall County6.7+0.3 pts
66Ogle County6.7-0.4 pts
68Clark County6.6-0.2 pts
68Jasper County6.6-0.6 pts
68Lee County6.6+0.1 pts
68Marshall County6.60 pts
68Sangamon County6.6+0.6 pts
68Will County6.6-0.6 pts
68Williamson County6.6+0.8 pts
75Madison County6.5+0.1 pts
75McLean County6.5+0.8 pts
77Henry County6.4-0.5 pts
77McDonough County6.4-0.4 pts
79Crawford County6.3-0.7 pts
79McHenry County6.3-0.7 pts
81Tazewell County6.2+0.3 pts
81Woodford County6.2+0.4 pts
83Calhoun County6.1-0.2 pts
83Mercer County6.1-0.3 pts
85Clinton County6-0.6 pts
85Hardin County6-0.6 pts
85Macon County6-0.4 pts
88Effingham County5.9+0.3 pts
88Jersey County5.90 pts
88Wabash County5.9-0.9 pts
91Adams County5.8-0.7 pts
91Brown County5.8+1.3 pts
91Logan County5.8-0.5 pts
91Shelby County5.8-0.8 pts
95De Witt County5.7-0.8 pts
95Menard County5.7+0.3 pts
97Cumberland County5.5-0.3 pts
98Scott County5.4-0.1 pts
99Piatt County5.3-0.5 pts
100Grundy County5.2-0.3 pts
101Washington County5.1-0.3 pts
102Monroe County3.9-0.5 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. 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. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

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, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in Illinois by uninsured rate, ages 18 to 64 (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, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, ages 18 to 64 (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-ages-18-64/illinois-counties?period=2023. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in Illinois by uninsured rate, ages 18 to 64 (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-ages-18-64/illinois-counties?period=2023.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in Illinois by uninsured rate, ages 18 to 64 (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-ages-18-64/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, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, ages 18 to 64 (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-ages-18-64/illinois-counties?period=2023. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in Illinois by uninsured rate, ages 18 to 64 (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-ages-18-64/illinois-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2023.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, 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  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Illinois by uninsured rate, ages 18 to 64 (US model-based estimate) using official data, and cite the source.
rank_places {"indicator":"uninsured_rate_18_64","level":"province","within":"Illinois","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=uninsured_rate_18_64&level=province&within=Illinois&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

Douglas County, with 11.2% in 2023, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

Monroe County, with 3.9% 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, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in Illinois: more rankings