Data / Rankings / Uninsured rate, ages 19 to 34 (US, ACS) / Counties in Illinois

Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS)

Douglas County had the highest uninsured rate, ages 19 to 34 (US, ACS) of 102 counties in 2021, at 25.5%. Gallatin County had the lowest, at 3.7%. The median was 9.4% and the figure for Illinois was 12%. Source: the U.S. Census Bureau.

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Highest25.5Douglas County
Lowest3.7Gallatin County
Median9.4102 counties
Illinois12History

Map of counties, 2021

Adams County: 8.8 %Alexander County: 13.4 %Bond County: 12.2 %Boone County: 11 %Brown County: 6.1 %Bureau County: 10 %Calhoun County: 4 %Carroll County: 15.3 %Cass County: 6.3 %Champaign County: 6.4 %Christian County: 7.3 %Clark County: 8.4 %Clay County: 6.8 %Clinton County: 6.3 %Coles County: 9.6 %Cook County: 14.1 %Crawford County: 8.7 %Cumberland County: 10 %DeKalb County: 8.3 %De Witt County: 6.4 %Douglas County: 25.5 %DuPage County: 9.3 %Edgar County: 7.1 %Edwards County: 10.5 %Effingham County: 9.7 %Fayette County: 13.1 %Ford County: 14.4 %Franklin County: 12.3 %Fulton County: 7.5 %Gallatin County: 3.7 %Greene County: 8.2 %Grundy County: 5.5 %Hamilton County: 8.6 %Hancock County: 10.1 %Hardin County: 23.4 %Henderson County: 8.1 %Henry County: 7.8 %Iroquois County: 14.2 %Jackson County: 10.1 %Jasper County: 13.7 %Jefferson County: 15.3 %Jersey County: 9.3 %Jo Daviess County: 12.5 %Johnson County: 10.1 %Kane County: 13.9 %Kankakee County: 10.4 %Kendall County: 9.6 %Knox County: 12.1 %Lake County: 12.1 %LaSalle County: 7.4 %Lawrence County: 18.6 %Lee County: 7 %Livingston County: 9.7 %Logan County: 6.7 %McDonough County: 10.9 %McHenry County: 9.1 %McLean County: 6.7 %Macon County: 8.9 %Macoupin County: 8.8 %Madison County: 9.6 %Marion County: 13.6 %Marshall County: 7.1 %Mason County: 8.4 %Massac County: 14.1 %Menard County: 5.9 %Mercer County: 14.4 %Monroe County: 6.5 %Montgomery County: 7.8 %Morgan County: 9.3 %Moultrie County: 22 %Ogle County: 11.5 %Peoria County: 12 %Perry County: 7.8 %Piatt County: 7.3 %Pike County: 7.7 %Pope County: 9 %Pulaski County: 8.1 %Putnam County: 7.8 %Randolph County: 10.1 %Richland County: 10.6 %Rock Island County: 11.5 %St. Clair County: 13.2 %Saline County: 12.6 %Sangamon County: 8.2 %Schuyler County: 8.5 %Scott County: 9.1 %Shelby County: 5.7 %Stark County: 6.6 %Stephenson County: 16.1 %Tazewell County: 9.1 %Union County: 5.8 %Vermilion County: 10.5 %Wabash County: 11 %Warren County: 7.9 %Washington County: 7.1 %Wayne County: 19.7 %White County: 10.1 %Whiteside County: 9.8 %Will County: 10 %Williamson County: 11.6 %Winnebago County: 11.5 %Woodford County: 8.4 %
  • Under 7.1
  • 7.1 to 8.3
  • 8.3 to 9.4
  • 9.4 to 11
  • 11 to 13
  • 13 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Douglas County: 25.5 %Douglas County25.5Hardin County: 23.4 %Hardin County23.4Moultrie County: 22 %Moultrie County22Wayne County: 19.7 %Wayne County19.7Lawrence County: 18.6 %Lawrence County18.6Stephenson County: 16.1 %Stephenson County16.1Carroll County: 15.3 %Carroll County15.3Jefferson County: 15.3 %Jefferson County15.3Ford County: 14.4 %Ford County14.4Mercer County: 14.4 %Mercer County14.4Iroquois County: 14.2 %Iroquois County14.2Massac County: 14.1 %Massac County14.1Cook County: 14.1 %Cook County14.1Kane County: 13.9 %Kane County13.9Jasper County: 13.7 %Jasper County13.7Marion County: 13.6 %Marion County13.6Alexander County: 13.4 %Alexander County13.4St. Clair County: 13.2 %St. Clair County13.2Fayette County: 13.1 %Fayette County13.1Saline County: 12.6 %Saline County12.6Jo Daviess County: 12.5 %Jo Daviess County12.5Franklin County: 12.3 %Franklin County12.3Bond County: 12.2 %Bond County12.2Knox County: 12.1 %Knox County12.1Lake County: 12.1 %Lake County12.1Peoria County: 12 %Peoria County12Williamson County: 11.6 %Williamson County11.6Winnebago County: 11.5 %Winnebago County11.5Ogle County: 11.5 %Ogle County11.5Rock Island County: 11.5 %Rock Island County11.5Boone County: 11 %Boone County11Wabash County: 11 %Wabash County11McDonough County: 10.9 %McDonough County10.9Richland County: 10.6 %Richland County10.6Vermilion County: 10.5 %Vermilion County10.5Edwards County: 10.5 %Edwards County10.5Kankakee County: 10.4 %Kankakee County10.4Johnson County: 10.1 %Johnson County10.1White County: 10.1 %White County10.1Jackson County: 10.1 %Jackson County10.1Douglas County: 25.5 %Douglas County25.5Hardin County: 23.4 %Hardin County23.4Moultrie County: 22 %Moultrie County22Wayne County: 19.7 %Wayne County19.7Lawrence County: 18.6 %Lawrence County18.6Stephenson County: 16.1 %Stephenson County16.1Carroll County: 15.3 %Carroll County15.3Jefferson County: 15.3 %Jefferson County15.3Ford County: 14.4 %Ford County14.4Mercer County: 14.4 %Mercer County14.4Iroquois County: 14.2 %Iroquois County14.2Massac County: 14.1 %Massac County14.1Cook County: 14.1 %Cook County14.1Kane County: 13.9 %Kane County13.9Jasper County: 13.7 %Jasper County13.7Marion County: 13.6 %Marion County13.6Alexander County: 13.4 %Alexander County13.4St. Clair County: 13.2 %St. Clair County13.2Fayette County: 13.1 %Fayette County13.1Saline County: 12.6 %Saline County12.6Jo Daviess County: 12.5 %Jo Daviess County12.5Franklin County: 12.3 %Franklin County12.3Bond County: 12.2 %Bond County12.2Knox County: 12.1 %Knox County12.1Lake County: 12.1 %Lake County12.1Peoria County: 12 %Peoria County12Williamson County: 11.6 %Williamson County11.6Winnebago County: 11.5 %Winnebago County11.5Ogle County: 11.5 %Ogle County11.5Rock Island County: 11.5 %Rock Island County11.5Boone County: 11 %Boone County11Wabash County: 11 %Wabash County11McDonough County: 10.9 %McDonough County10.9Richland County: 10.6 %Richland County10.6Vermilion County: 10.5 %Vermilion County10.5Edwards County: 10.5 %Edwards County10.5Kankakee County: 10.4 %Kankakee County10.4Johnson County: 10.1 %Johnson County10.1White County: 10.1 %White County10.1Jackson County: 10.1 %Jackson County10.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Douglas County25.5
2Hardin County23.4
3Moultrie County22
4Wayne County19.7
5Lawrence County18.6
6Stephenson County16.1
7Carroll County15.3
8Jefferson County15.3
9Ford County14.4
10Mercer County14.4
11Iroquois County14.2
12Massac County14.1
13Cook County14.1
14Kane County13.9
15Jasper County13.7
16Marion County13.6
17Alexander County13.4
18St. Clair County13.2
19Fayette County13.1
20Saline County12.6
21Jo Daviess County12.5
22Franklin County12.3
23Bond County12.2
24Knox County12.1
25Lake County12.1
26Peoria County12
27Williamson County11.6
28Winnebago County11.5
29Ogle County11.5
30Rock Island County11.5
31Boone County11
32Wabash County11
33McDonough County10.9
34Richland County10.6
35Vermilion County10.5
36Edwards County10.5
37Kankakee County10.4
38Johnson County10.1
38White County10.1
40Jackson County10.1
41Randolph County10.1
42Hancock County10.1
43Cumberland County10
44Will County10
45Bureau County10
46Whiteside County9.8
47Effingham County9.7
48Livingston County9.7
49Coles County9.6
49Kendall County9.6
51Madison County9.6
52DuPage County9.3
52Jersey County9.3
54Morgan County9.3
55McHenry County9.1
56Scott County9.1
57Tazewell County9.1
58Pope County9
59Macon County8.9
60Macoupin County8.8
61Adams County8.8
62Crawford County8.7
63Hamilton County8.6
64Schuyler County8.5
65Mason County8.4
66Woodford County8.4
67Clark County8.4
68DeKalb County8.3
69Greene County8.2
69Sangamon County8.2
71Pulaski County8.1
72Henderson County8.1
73Warren County7.9
74Perry County7.8
75Montgomery County7.8
76Putnam County7.8
77Henry County7.8
78Pike County7.7
79Fulton County7.5
80LaSalle County7.4
81Christian County7.3
82Piatt County7.3
83Marshall County7.1
84Edgar County7.1
85Washington County7.1
86Lee County7
87Clay County6.8
88McLean County6.7
89Logan County6.7
90Stark County6.6
91Monroe County6.5
92De Witt County6.4
93Champaign County6.4
94Clinton County6.3
95Cass County6.3
96Brown County6.1
97Menard County5.9
98Union County5.8
99Shelby County5.7
100Grundy County5.5
101Calhoun County4
102Gallatin County3.7

Other periods

About this ranking

People aged 19 to 34 without health insurance coverage of any kind, as a percentage of the civilian noninstitutionalized population aged 19 to 34. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Coverage is what people reported at the interview, so the five-year figure averages five years of answers. People whose only coverage is the Indian Health Service count as uninsured. Active-duty military and people living in institutions are outside the universe. For single-year model-based county figures under 65, see uninsured_rate_under_65, uninsured_rate_18_64 and uninsured_rate_under_19 (SAHIE), a different source.

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. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. 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). American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs (Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat

MLA 9

American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs, Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs: Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS), 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b27010.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest uninsured rate, ages 19 to 34 (US, ACS)?

Douglas County, with 25.5% in 2021, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 19 to 34 (US, ACS)?

Gallatin County, with 3.7% in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B27010: people aged 19 to 34 with no health insurance coverage as a percentage of the civilian noninstitutionalized population aged 19 to 34, calculated with stored inputs. Retrieved 2026-10-12.

Uninsured rate, ages 19 to 34 (US, ACS): other rankings

Counties in Illinois: more rankings