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 2014, at 17.7%. Monroe County had the lowest, at 7.3%. The median was 10.9% and the figure for Illinois was 14%. Source: the U.S. Census Bureau.

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Highest17.7Cook County
Lowest7.3Monroe County
Median10.9102 counties
Illinois14History

Map of counties, 2014

Adams County: 10.2 %Alexander County: 13.7 %Bond County: 11.2 %Boone County: 13.6 %Brown County: 8.5 %Bureau County: 11.7 %Calhoun County: 10.2 %Carroll County: 11.5 %Cass County: 14.9 %Champaign County: 11.1 %Christian County: 10.6 %Clark County: 10.5 %Clay County: 10.8 %Clinton County: 9.1 %Coles County: 10.7 %Cook County: 17.7 %Crawford County: 10.5 %Cumberland County: 9.8 %DeKalb County: 11.1 %De Witt County: 9.5 %Douglas County: 14.9 %DuPage County: 10.6 %Edgar County: 11 %Edwards County: 10.9 %Effingham County: 9.4 %Fayette County: 13 %Ford County: 10.9 %Franklin County: 12.6 %Fulton County: 12.1 %Gallatin County: 12.4 %Greene County: 11.3 %Grundy County: 9.6 %Hamilton County: 11.6 %Hancock County: 10.6 %Hardin County: 11.8 %Henderson County: 11.5 %Henry County: 9.5 %Iroquois County: 12.5 %Jackson County: 13.5 %Jasper County: 10.7 %Jefferson County: 10.1 %Jersey County: 10.1 %Jo Daviess County: 11.2 %Johnson County: 10.3 %Kane County: 15.7 %Kankakee County: 12.3 %Kendall County: 8.7 %Knox County: 11.7 %Lake County: 12.6 %LaSalle County: 11 %Lawrence County: 10.9 %Lee County: 10.3 %Livingston County: 9.4 %Logan County: 9.2 %McDonough County: 10.8 %McHenry County: 11 %McLean County: 8 %Macon County: 10.4 %Macoupin County: 10.1 %Madison County: 9.7 %Marion County: 11.8 %Marshall County: 9.9 %Mason County: 11.7 %Massac County: 11.2 %Menard County: 9 %Mercer County: 8.7 %Monroe County: 7.3 %Montgomery County: 9.8 %Morgan County: 10.7 %Moultrie County: 12.4 %Ogle County: 11.2 %Peoria County: 11.3 %Perry County: 10.7 %Piatt County: 8.2 %Pike County: 13.4 %Pope County: 12.4 %Pulaski County: 12.5 %Putnam County: 9.7 %Randolph County: 10.2 %Richland County: 10 %Rock Island County: 13.1 %St. Clair County: 11.4 %Saline County: 12.7 %Sangamon County: 9.6 %Schuyler County: 12.3 %Scott County: 11.3 %Shelby County: 10.5 %Stark County: 10.9 %Stephenson County: 10.1 %Tazewell County: 7.9 %Union County: 12.7 %Vermilion County: 11.4 %Wabash County: 10.3 %Warren County: 12.3 %Washington County: 8.5 %Wayne County: 11.5 %White County: 11.3 %Whiteside County: 10.7 %Will County: 11.6 %Williamson County: 11.2 %Winnebago County: 13.6 %Woodford County: 7.6 %
  • Under 9.6
  • 9.6 to 10
  • 10 to 11
  • 11 to 12
  • 12 and over
%, 2014. 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, 2014

Cook County: 17.7 %Cook County17.7Kane County: 15.7 %Kane County15.7Cass County: 14.9 %Cass County14.9Douglas County: 14.9 %Douglas County14.9Alexander County: 13.7 %Alexander County13.7Boone County: 13.6 %Boone County13.6Winnebago County: 13.6 %Winnebago County13.6Jackson County: 13.5 %Jackson County13.5Pike County: 13.4 %Pike County13.4Rock Island County: 13.1 %Rock Island County13.1Fayette County: 13 %Fayette County13Saline County: 12.7 %Saline County12.7Union County: 12.7 %Union County12.7Franklin County: 12.6 %Franklin County12.6Lake County: 12.6 %Lake County12.6Iroquois County: 12.5 %Iroquois County12.5Pulaski County: 12.5 %Pulaski County12.5Gallatin County: 12.4 %Gallatin County12.4Moultrie County: 12.4 %Moultrie County12.4Pope County: 12.4 %Pope County12.4Kankakee County: 12.3 %Kankakee County12.3Schuyler County: 12.3 %Schuyler County12.3Warren County: 12.3 %Warren County12.3Fulton County: 12.1 %Fulton County12.1Hardin County: 11.8 %Hardin County11.8Marion County: 11.8 %Marion County11.8Bureau County: 11.7 %Bureau County11.7Knox County: 11.7 %Knox County11.7Mason County: 11.7 %Mason County11.7Hamilton County: 11.6 %Hamilton County11.6Will County: 11.6 %Will County11.6Carroll County: 11.5 %Carroll County11.5Henderson County: 11.5 %Henderson County11.5Wayne County: 11.5 %Wayne County11.5St. Clair County: 11.4 %St. Clair County11.4Vermilion County: 11.4 %Vermilion County11.4Greene County: 11.3 %Greene County11.3Peoria County: 11.3 %Peoria County11.3Scott County: 11.3 %Scott County11.3White County: 11.3 %White County11.3Cook County: 17.7 %Cook County17.7Kane County: 15.7 %Kane County15.7Cass County: 14.9 %Cass County14.9Douglas County: 14.9 %Douglas County14.9Alexander County: 13.7 %Alexander County13.7Boone County: 13.6 %Boone County13.6Winnebago County: 13.6 %Winnebago County13.6Jackson County: 13.5 %Jackson County13.5Pike County: 13.4 %Pike County13.4Rock Island County: 13.1 %Rock Island County13.1Fayette County: 13 %Fayette County13Saline County: 12.7 %Saline County12.7Union County: 12.7 %Union County12.7Franklin County: 12.6 %Franklin County12.6Lake County: 12.6 %Lake County12.6Iroquois County: 12.5 %Iroquois County12.5Pulaski County: 12.5 %Pulaski County12.5Gallatin County: 12.4 %Gallatin County12.4Moultrie County: 12.4 %Moultrie County12.4Pope County: 12.4 %Pope County12.4Kankakee County: 12.3 %Kankakee County12.3Schuyler County: 12.3 %Schuyler County12.3Warren County: 12.3 %Warren County12.3Fulton County: 12.1 %Fulton County12.1Hardin County: 11.8 %Hardin County11.8Marion County: 11.8 %Marion County11.8Bureau County: 11.7 %Bureau County11.7Knox County: 11.7 %Knox County11.7Mason County: 11.7 %Mason County11.7Hamilton County: 11.6 %Hamilton County11.6Will County: 11.6 %Will County11.6Carroll County: 11.5 %Carroll County11.5Henderson County: 11.5 %Henderson County11.5Wayne County: 11.5 %Wayne County11.5St. Clair County: 11.4 %St. Clair County11.4Vermilion County: 11.4 %Vermilion County11.4Greene County: 11.3 %Greene County11.3Peoria County: 11.3 %Peoria County11.3Scott County: 11.3 %Scott County11.3White County: 11.3 %White County11.3
%. 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

RankCounties2014 (%)Change on 2013
1Cook County17.7-5.6 pts
2Kane County15.7-5.3 pts
3Cass County14.9-5 pts
3Douglas County14.9-5.6 pts
5Alexander County13.7-4.4 pts
6Boone County13.6-5 pts
6Winnebago County13.6-3.3 pts
8Jackson County13.5-3.2 pts
9Pike County13.4-5.4 pts
10Rock Island County13.1-3.8 pts
11Fayette County13-4.6 pts
12Saline County12.7-3.3 pts
12Union County12.7-5.7 pts
14Franklin County12.6-4.4 pts
14Lake County12.6-3.8 pts
16Iroquois County12.5-3.6 pts
16Pulaski County12.5-5.3 pts
18Gallatin County12.4-4 pts
18Moultrie County12.4-3.7 pts
18Pope County12.4-4.9 pts
21Kankakee County12.3-3.4 pts
21Schuyler County12.3-5.8 pts
21Warren County12.3-5.6 pts
24Fulton County12.1-4 pts
25Hardin County11.8-4.6 pts
25Marion County11.8-4 pts
27Bureau County11.7-4.3 pts
27Knox County11.7-4.2 pts
27Mason County11.7-3.4 pts
30Hamilton County11.6-5.1 pts
30Will County11.6-2.9 pts
32Carroll County11.5-4.9 pts
32Henderson County11.5-4.3 pts
32Wayne County11.5-5 pts
35St. Clair County11.4-3.8 pts
35Vermilion County11.4-4.5 pts
37Greene County11.3-4.8 pts
37Peoria County11.3-3 pts
37Scott County11.3-4.3 pts
37White County11.3-3.3 pts
41Bond County11.2-2.8 pts
41Jo Daviess County11.2-5.2 pts
41Massac County11.2-3.2 pts
41Ogle County11.2-3.4 pts
41Williamson County11.2-4.7 pts
46Champaign County11.1-3.9 pts
46DeKalb County11.1-4.9 pts
48Edgar County11-3.8 pts
48LaSalle County11-4.9 pts
48McHenry County11-2.7 pts
51Edwards County10.9-3.5 pts
51Ford County10.9-2.8 pts
51Lawrence County10.9-4.4 pts
51Stark County10.9-3.7 pts
55Clay County10.8-4.7 pts
55McDonough County10.8-6 pts
57Coles County10.7-5.5 pts
57Jasper County10.7-4.9 pts
57Morgan County10.7-2.6 pts
57Perry County10.7-4 pts
57Whiteside County10.7-4.5 pts
62Christian County10.6-3.8 pts
62DuPage County10.6-2.8 pts
62Hancock County10.6-6.2 pts
65Clark County10.5-4.1 pts
65Crawford County10.5-4 pts
65Shelby County10.5-4.3 pts
68Macon County10.4-3.2 pts
69Johnson County10.3-5.9 pts
69Lee County10.3-3.8 pts
69Wabash County10.3-4.9 pts
72Adams County10.2-3.2 pts
72Calhoun County10.2-5.8 pts
72Randolph County10.2-3.3 pts
75Jefferson County10.1-5.8 pts
75Jersey County10.1-2.7 pts
75Macoupin County10.1-4.8 pts
75Stephenson County10.1-4.4 pts
79Richland County10-4.8 pts
80Marshall County9.9-3.4 pts
81Cumberland County9.8-4.5 pts
81Montgomery County9.8-4.9 pts
83Madison County9.7-3.1 pts
83Putnam County9.7-5.4 pts
85Grundy County9.6-2.8 pts
85Sangamon County9.6-3.2 pts
87De Witt County9.5-3.3 pts
87Henry County9.5-4.2 pts
89Effingham County9.4-3.2 pts
89Livingston County9.4-3.3 pts
91Logan County9.2-3.4 pts
92Clinton County9.1-2.7 pts
93Menard County9-3.3 pts
94Kendall County8.7-3.1 pts
94Mercer County8.7-4.4 pts
96Brown County8.5-4.2 pts
96Washington County8.5-4.1 pts
98Piatt County8.2-3.1 pts
99McLean County8-3.6 pts
100Tazewell County7.9-4.1 pts
101Woodford County7.6-2.2 pts
102Monroe County7.3-2.1 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-2014-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), 2014) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-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), 2014. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014. 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), 2014. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014.

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), 2014 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2014,
  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), 2014}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2014-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014. 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-2014-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), 2014
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-2014-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/illinois-counties?period=2014.
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-2014-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 17.7% in 2014, 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 7.3% in 2014.

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