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)

Cook County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 102 counties in 2013, at 23.3%. Monroe County had the lowest, at 9.4%. The median was 15.1% and the figure for Illinois was 18.5%. Source: the U.S. Census Bureau.

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Highest23.3Cook County
Lowest9.4Monroe County
Median15.1102 counties
Illinois18.5History

Map of counties, 2013

Adams County: 13.4 %Alexander County: 18.1 %Bond County: 14 %Boone County: 18.6 %Brown County: 12.7 %Bureau County: 16 %Calhoun County: 16 %Carroll County: 16.4 %Cass County: 19.9 %Champaign County: 15 %Christian County: 14.4 %Clark County: 14.6 %Clay County: 15.5 %Clinton County: 11.8 %Coles County: 16.2 %Cook County: 23.3 %Crawford County: 14.5 %Cumberland County: 14.3 %DeKalb County: 16 %De Witt County: 12.8 %Douglas County: 20.5 %DuPage County: 13.4 %Edgar County: 14.8 %Edwards County: 14.4 %Effingham County: 12.6 %Fayette County: 17.6 %Ford County: 13.7 %Franklin County: 17 %Fulton County: 16.1 %Gallatin County: 16.4 %Greene County: 16.1 %Grundy County: 12.4 %Hamilton County: 16.7 %Hancock County: 16.8 %Hardin County: 16.4 %Henderson County: 15.8 %Henry County: 13.7 %Iroquois County: 16.1 %Jackson County: 16.7 %Jasper County: 15.6 %Jefferson County: 15.9 %Jersey County: 12.8 %Jo Daviess County: 16.4 %Johnson County: 16.2 %Kane County: 21 %Kankakee County: 15.7 %Kendall County: 11.8 %Knox County: 15.9 %Lake County: 16.4 %LaSalle County: 15.9 %Lawrence County: 15.3 %Lee County: 14.1 %Livingston County: 12.7 %Logan County: 12.6 %McDonough County: 16.8 %McHenry County: 13.7 %McLean County: 11.6 %Macon County: 13.6 %Macoupin County: 14.9 %Madison County: 12.8 %Marion County: 15.8 %Marshall County: 13.3 %Mason County: 15.1 %Massac County: 14.4 %Menard County: 12.3 %Mercer County: 13.1 %Monroe County: 9.4 %Montgomery County: 14.7 %Morgan County: 13.3 %Moultrie County: 16.1 %Ogle County: 14.6 %Peoria County: 14.3 %Perry County: 14.7 %Piatt County: 11.3 %Pike County: 18.8 %Pope County: 17.3 %Pulaski County: 17.8 %Putnam County: 15.1 %Randolph County: 13.5 %Richland County: 14.8 %Rock Island County: 16.9 %St. Clair County: 15.2 %Saline County: 16 %Sangamon County: 12.8 %Schuyler County: 18.1 %Scott County: 15.6 %Shelby County: 14.8 %Stark County: 14.6 %Stephenson County: 14.5 %Tazewell County: 12 %Union County: 18.4 %Vermilion County: 15.9 %Wabash County: 15.2 %Warren County: 17.9 %Washington County: 12.6 %Wayne County: 16.5 %White County: 14.6 %Whiteside County: 15.2 %Will County: 14.5 %Williamson County: 15.9 %Winnebago County: 16.9 %Woodford County: 9.8 %
  • Under 13
  • 13 to 14
  • 14 to 15
  • 15 to 16
  • 16 to 17
  • 17 and over
%, 2013. 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, 2013

Cook County: 23.3 %Cook County23.3Kane County: 21 %Kane County21Douglas County: 20.5 %Douglas County20.5Cass County: 19.9 %Cass County19.9Pike County: 18.8 %Pike County18.8Boone County: 18.6 %Boone County18.6Union County: 18.4 %Union County18.4Alexander County: 18.1 %Alexander County18.1Schuyler County: 18.1 %Schuyler County18.1Warren County: 17.9 %Warren County17.9Pulaski County: 17.8 %Pulaski County17.8Fayette County: 17.6 %Fayette County17.6Pope County: 17.3 %Pope County17.3Franklin County: 17 %Franklin County17Rock Island County: 16.9 %Rock Island County16.9Winnebago County: 16.9 %Winnebago County16.9Hancock County: 16.8 %Hancock County16.8McDonough County: 16.8 %McDonough County16.8Hamilton County: 16.7 %Hamilton County16.7Jackson County: 16.7 %Jackson County16.7Wayne County: 16.5 %Wayne County16.5Carroll County: 16.4 %Carroll County16.4Gallatin County: 16.4 %Gallatin County16.4Hardin County: 16.4 %Hardin County16.4Jo Daviess County: 16.4 %Jo Daviess County16.4Lake County: 16.4 %Lake County16.4Coles County: 16.2 %Coles County16.2Johnson County: 16.2 %Johnson County16.2Fulton County: 16.1 %Fulton County16.1Greene County: 16.1 %Greene County16.1Iroquois County: 16.1 %Iroquois County16.1Moultrie County: 16.1 %Moultrie County16.1Bureau County: 16 %Bureau County16Calhoun County: 16 %Calhoun County16DeKalb County: 16 %DeKalb County16Saline County: 16 %Saline County16Jefferson County: 15.9 %Jefferson County15.9Knox County: 15.9 %Knox County15.9LaSalle County: 15.9 %LaSalle County15.9Vermilion County: 15.9 %Vermilion County15.9Cook County: 23.3 %Cook County23.3Kane County: 21 %Kane County21Douglas County: 20.5 %Douglas County20.5Cass County: 19.9 %Cass County19.9Pike County: 18.8 %Pike County18.8Boone County: 18.6 %Boone County18.6Union County: 18.4 %Union County18.4Alexander County: 18.1 %Alexander County18.1Schuyler County: 18.1 %Schuyler County18.1Warren County: 17.9 %Warren County17.9Pulaski County: 17.8 %Pulaski County17.8Fayette County: 17.6 %Fayette County17.6Pope County: 17.3 %Pope County17.3Franklin County: 17 %Franklin County17Rock Island County: 16.9 %Rock Island County16.9Winnebago County: 16.9 %Winnebago County16.9Hancock County: 16.8 %Hancock County16.8McDonough County: 16.8 %McDonough County16.8Hamilton County: 16.7 %Hamilton County16.7Jackson County: 16.7 %Jackson County16.7Wayne County: 16.5 %Wayne County16.5Carroll County: 16.4 %Carroll County16.4Gallatin County: 16.4 %Gallatin County16.4Hardin County: 16.4 %Hardin County16.4Jo Daviess County: 16.4 %Jo Daviess County16.4Lake County: 16.4 %Lake County16.4Coles County: 16.2 %Coles County16.2Johnson County: 16.2 %Johnson County16.2Fulton County: 16.1 %Fulton County16.1Greene County: 16.1 %Greene County16.1Iroquois County: 16.1 %Iroquois County16.1Moultrie County: 16.1 %Moultrie County16.1Bureau County: 16 %Bureau County16Calhoun County: 16 %Calhoun County16DeKalb County: 16 %DeKalb County16Saline County: 16 %Saline County16Jefferson County: 15.9 %Jefferson County15.9Knox County: 15.9 %Knox County15.9LaSalle County: 15.9 %LaSalle County15.9Vermilion County: 15.9 %Vermilion County15.9
%. 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

RankCounties2013 (%)Change on 2012
1Cook County23.30 pts
2Kane County210 pts
3Douglas County20.5+0.2 pts
4Cass County19.9-1 pts
5Pike County18.8+0.6 pts
6Boone County18.60 pts
7Union County18.4+0.7 pts
8Alexander County18.1+0.2 pts
8Schuyler County18.1-0.2 pts
10Warren County17.9-0.7 pts
11Pulaski County17.8-0.3 pts
12Fayette County17.6-0.7 pts
13Pope County17.3+0.1 pts
14Franklin County17-0.2 pts
15Rock Island County16.90 pts
15Winnebago County16.9-2 pts
17Hancock County16.8+1.2 pts
17McDonough County16.8+1.3 pts
19Hamilton County16.7+0.3 pts
19Jackson County16.7-1.6 pts
21Wayne County16.5+0.4 pts
22Carroll County16.4+0.4 pts
22Gallatin County16.4-1.5 pts
22Hardin County16.4-0.4 pts
22Jo Daviess County16.4-0.6 pts
22Lake County16.4+0.5 pts
27Coles County16.20 pts
27Johnson County16.2+0.6 pts
29Fulton County16.1+0.3 pts
29Greene County16.10 pts
29Iroquois County16.1-0.4 pts
29Moultrie County16.1-1.1 pts
33Bureau County16-1.1 pts
33Calhoun County16-0.8 pts
33DeKalb County16-0.1 pts
33Saline County16-1.1 pts
37Jefferson County15.9+0.5 pts
37Knox County15.9+0.1 pts
37LaSalle County15.9+0.1 pts
37Vermilion County15.9-1 pts
37Williamson County15.9-0.6 pts
42Henderson County15.8-1.2 pts
42Marion County15.8-0.6 pts
44Kankakee County15.7-2.4 pts
45Jasper County15.6-0.4 pts
45Scott County15.60 pts
47Clay County15.5-0.3 pts
48Lawrence County15.3-1.1 pts
49St. Clair County15.2-1 pts
49Wabash County15.20 pts
49Whiteside County15.2-1.6 pts
52Mason County15.1-0.9 pts
52Putnam County15.1-0.2 pts
54Champaign County15+0.3 pts
55Macoupin County14.90 pts
56Edgar County14.8-0.2 pts
56Richland County14.8-1.4 pts
56Shelby County14.8-0.6 pts
59Montgomery County14.7+0.8 pts
59Perry County14.7-1.1 pts
61Clark County14.6+0.2 pts
61Ogle County14.6-0.7 pts
61Stark County14.6-0.6 pts
61White County14.6-1.7 pts
65Crawford County14.5-0.9 pts
65Stephenson County14.5-1.9 pts
65Will County14.5+0.5 pts
68Christian County14.4-1.1 pts
68Edwards County14.4-0.6 pts
68Massac County14.4-1.7 pts
71Cumberland County14.3-0.4 pts
71Peoria County14.3-1.6 pts
73Lee County14.1-0.8 pts
74Bond County14-0.5 pts
75Ford County13.7-0.8 pts
75Henry County13.7-0.1 pts
75McHenry County13.7-0.7 pts
78Macon County13.6-1.8 pts
79Randolph County13.5-0.5 pts
80Adams County13.4-0.8 pts
80DuPage County13.4-0.9 pts
82Marshall County13.3-0.8 pts
82Morgan County13.3-1.4 pts
84Mercer County13.1-1 pts
85De Witt County12.8-0.1 pts
85Jersey County12.8-1.7 pts
85Madison County12.8-1.6 pts
85Sangamon County12.8-1.2 pts
89Brown County12.7-1.2 pts
89Livingston County12.7-0.7 pts
91Effingham County12.6-1.2 pts
91Logan County12.6-0.6 pts
91Washington County12.6-0.7 pts
94Grundy County12.4-1.1 pts
95Menard County12.3-0.9 pts
96Tazewell County12-0.3 pts
97Clinton County11.8-0.1 pts
97Kendall County11.8-0.8 pts
99McLean County11.6-0.4 pts
100Piatt County11.3-0.2 pts
101Woodford County9.8-1.3 pts
102Monroe County9.4-1.1 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-2013-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), 2013) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-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), 2013. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013. 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), 2013. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013.

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), 2013 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2013,
  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), 2013}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2013-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013. 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-2013-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), 2013
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-2013-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2013.
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-2013-csv.zip. Retrieved 2026-10-12.
ER  -
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Questions

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

Cook County, with 23.3% in 2013, 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 9.4% in 2013.

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