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 2023, at 24.1%. Calhoun County had the lowest, at 1.1%. The median was 8.9% and the figure for Illinois was 11.7%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest24.1Douglas County
Median8.9102 counties
Illinois11.7History

Map of counties, 2023

Adams County: 9.1 %Alexander County: 20.8 %Bond County: 6.5 %Boone County: 6.6 %Brown County: 4.1 %Bureau County: 9.2 %Calhoun County: 1.1 %Carroll County: 10.2 %Cass County: 9.2 %Champaign County: 6.8 %Christian County: 9.3 %Clark County: 7.5 %Clay County: 7.2 %Clinton County: 7 %Coles County: 8.8 %Cook County: 13.9 %Crawford County: 8.7 %Cumberland County: 4.8 %DeKalb County: 7.5 %De Witt County: 4.6 %Douglas County: 24.1 %DuPage County: 9.3 %Edgar County: 6 %Edwards County: 8.4 %Effingham County: 9.3 %Fayette County: 10.7 %Ford County: 9.1 %Franklin County: 12.9 %Fulton County: 7.4 %Gallatin County: 3.3 %Greene County: 4.2 %Grundy County: 6.1 %Hamilton County: 10.9 %Hancock County: 13.4 %Hardin County: 7.5 %Henderson County: 3.1 %Henry County: 8.1 %Iroquois County: 13.4 %Jackson County: 9.5 %Jasper County: 9.2 %Jefferson County: 14.7 %Jersey County: 9.1 %Jo Daviess County: 14.8 %Johnson County: 21.2 %Kane County: 14.1 %Kankakee County: 9.5 %Kendall County: 7.9 %Knox County: 12 %Lake County: 12.4 %LaSalle County: 7.1 %Lawrence County: 14.5 %Lee County: 8.8 %Livingston County: 9.5 %Logan County: 4.2 %McDonough County: 10 %McHenry County: 8.4 %McLean County: 7.4 %Macon County: 8.4 %Macoupin County: 8.6 %Madison County: 9.2 %Marion County: 12.3 %Marshall County: 4.6 %Mason County: 6.9 %Massac County: 24 %Menard County: 5.3 %Mercer County: 13.5 %Monroe County: 5.7 %Montgomery County: 8.5 %Morgan County: 7.4 %Moultrie County: 18.9 %Ogle County: 7.5 %Peoria County: 10.9 %Perry County: 7.2 %Piatt County: 6.9 %Pike County: 9.7 %Pope County: 6.3 %Pulaski County: 3.5 %Putnam County: 9.1 %Randolph County: 13.4 %Richland County: 13.7 %Rock Island County: 11.9 %St. Clair County: 11.6 %Saline County: 11.4 %Sangamon County: 8.4 %Schuyler County: 8.5 %Scott County: 15.5 %Shelby County: 6.1 %Stark County: 8 %Stephenson County: 12.7 %Tazewell County: 8.5 %Union County: 8 %Vermilion County: 8.6 %Wabash County: 12.5 %Warren County: 7.8 %Washington County: 7.3 %Wayne County: 18.1 %White County: 7.5 %Whiteside County: 10.2 %Will County: 9.1 %Williamson County: 11.9 %Winnebago County: 10.9 %Woodford County: 9 %
  • Under 6.6
  • 6.6 to 7.7
  • 7.7 to 8.9
  • 8.9 to 9.7
  • 9.7 to 13
  • 13 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Douglas County: 24.1 %Douglas County24.1Massac County: 24 %Massac County24Johnson County: 21.2 %Johnson County21.2Alexander County: 20.8 %Alexander County20.8Moultrie County: 18.9 %Moultrie County18.9Wayne County: 18.1 %Wayne County18.1Scott County: 15.5 %Scott County15.5Jo Daviess County: 14.8 %Jo Daviess County14.8Jefferson County: 14.7 %Jefferson County14.7Lawrence County: 14.5 %Lawrence County14.5Kane County: 14.1 %Kane County14.1Cook County: 13.9 %Cook County13.9Richland County: 13.7 %Richland County13.7Mercer County: 13.5 %Mercer County13.5Randolph County: 13.4 %Randolph County13.4Hancock County: 13.4 %Hancock County13.4Iroquois County: 13.4 %Iroquois County13.4Franklin County: 12.9 %Franklin County12.9Stephenson County: 12.7 %Stephenson County12.7Wabash County: 12.5 %Wabash County12.5Lake County: 12.4 %Lake County12.4Marion County: 12.3 %Marion County12.3Knox County: 12 %Knox County12Rock Island County: 11.9 %Rock Island County11.9Williamson County: 11.9 %Williamson County11.9St. Clair County: 11.6 %St. Clair County11.6Saline County: 11.4 %Saline County11.4Hamilton County: 10.9 %Hamilton County10.9Peoria County: 10.9 %Peoria County10.9Winnebago County: 10.9 %Winnebago County10.9Fayette County: 10.7 %Fayette County10.7Carroll County: 10.2 %Carroll County10.2Whiteside County: 10.2 %Whiteside County10.2McDonough County: 10 %McDonough County10Pike County: 9.7 %Pike County9.7Jackson County: 9.5 %Jackson County9.5Kankakee County: 9.5 %Kankakee County9.5Livingston County: 9.5 %Livingston County9.5DuPage County: 9.3 %DuPage County9.3Effingham County: 9.3 %Effingham County9.3Douglas County: 24.1 %Douglas County24.1Massac County: 24 %Massac County24Johnson County: 21.2 %Johnson County21.2Alexander County: 20.8 %Alexander County20.8Moultrie County: 18.9 %Moultrie County18.9Wayne County: 18.1 %Wayne County18.1Scott County: 15.5 %Scott County15.5Jo Daviess County: 14.8 %Jo Daviess County14.8Jefferson County: 14.7 %Jefferson County14.7Lawrence County: 14.5 %Lawrence County14.5Kane County: 14.1 %Kane County14.1Cook County: 13.9 %Cook County13.9Richland County: 13.7 %Richland County13.7Mercer County: 13.5 %Mercer County13.5Randolph County: 13.4 %Randolph County13.4Hancock County: 13.4 %Hancock County13.4Iroquois County: 13.4 %Iroquois County13.4Franklin County: 12.9 %Franklin County12.9Stephenson County: 12.7 %Stephenson County12.7Wabash County: 12.5 %Wabash County12.5Lake County: 12.4 %Lake County12.4Marion County: 12.3 %Marion County12.3Knox County: 12 %Knox County12Rock Island County: 11.9 %Rock Island County11.9Williamson County: 11.9 %Williamson County11.9St. Clair County: 11.6 %St. Clair County11.6Saline County: 11.4 %Saline County11.4Hamilton County: 10.9 %Hamilton County10.9Peoria County: 10.9 %Peoria County10.9Winnebago County: 10.9 %Winnebago County10.9Fayette County: 10.7 %Fayette County10.7Carroll County: 10.2 %Carroll County10.2Whiteside County: 10.2 %Whiteside County10.2McDonough County: 10 %McDonough County10Pike County: 9.7 %Pike County9.7Jackson County: 9.5 %Jackson County9.5Kankakee County: 9.5 %Kankakee County9.5Livingston County: 9.5 %Livingston County9.5DuPage County: 9.3 %DuPage County9.3Effingham County: 9.3 %Effingham County9.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Douglas County24.1-0.8 pts
2Massac County24+5.6 pts
3Johnson County21.2+9.1 pts
4Alexander County20.8+6.2 pts
5Moultrie County18.9-4.5 pts
6Wayne County18.1-0 pts
7Scott County15.5+1.8 pts
8Jo Daviess County14.8+2.8 pts
9Jefferson County14.7-0.3 pts
10Lawrence County14.5-3.7 pts
11Kane County14.1+0.5 pts
12Cook County13.9-0 pts
13Richland County13.7+0.3 pts
14Mercer County13.5+0.1 pts
15Randolph County13.4+1.3 pts
16Hancock County13.4+2.4 pts
17Iroquois County13.4+1.2 pts
18Franklin County12.9-0.5 pts
19Stephenson County12.7-3.1 pts
20Wabash County12.5+1.8 pts
21Lake County12.4+0.1 pts
22Marion County12.3-0.4 pts
23Knox County12-0 pts
24Rock Island County11.9-0.8 pts
25Williamson County11.90 pts
26St. Clair County11.6+0.2 pts
27Saline County11.4+0.6 pts
28Hamilton County10.9+2.4 pts
29Peoria County10.9-1 pts
29Winnebago County10.9-0.9 pts
31Fayette County10.7-2 pts
32Carroll County10.2-1.9 pts
33Whiteside County10.2-0.4 pts
34McDonough County10-0.5 pts
35Pike County9.7+1.3 pts
36Jackson County9.5-0.3 pts
36Kankakee County9.5-0.9 pts
38Livingston County9.5-0 pts
39DuPage County9.3+0.3 pts
40Effingham County9.3-0.9 pts
41Christian County9.3+0.9 pts
42Bureau County9.2-2.3 pts
43Cass County9.2+1.6 pts
43Jasper County9.2-6.2 pts
43Madison County9.2-0.8 pts
46Ford County9.1-3.8 pts
47Adams County9.1-0.4 pts
47Jersey County9.1+2.1 pts
49Will County9.1-0.5 pts
50Putnam County9.1+2.8 pts
51Woodford County90 pts
52Lee County8.8+0.1 pts
53Coles County8.8-0.7 pts
54Crawford County8.7-1.6 pts
55Vermilion County8.6-1.3 pts
56Macoupin County8.6-0.2 pts
57Schuyler County8.5+0.7 pts
58Montgomery County8.5-0.7 pts
59Tazewell County8.5-0.7 pts
60Edwards County8.4+0.4 pts
61Macon County8.4-1 pts
62Sangamon County8.4+0.1 pts
63McHenry County8.4-0.8 pts
64Henry County8.1-0.1 pts
65Union County8+2 pts
66Stark County8-0.8 pts
67Kendall County7.9-2 pts
68Warren County7.8-0.2 pts
69DeKalb County7.5+0.3 pts
70Ogle County7.5-1.8 pts
71Hardin County7.5-2.3 pts
71White County7.5-2.7 pts
73Clark County7.5-1.4 pts
74Morgan County7.4-2 pts
75McLean County7.4+0.4 pts
76Fulton County7.4+1.4 pts
77Washington County7.3-1.5 pts
78Perry County7.2-0.7 pts
79Clay County7.2+1.4 pts
80LaSalle County7.10 pts
81Clinton County7-0.4 pts
82Mason County6.9-0.9 pts
83Piatt County6.9+0.6 pts
84Champaign County6.8+0.3 pts
85Boone County6.6-2.9 pts
86Bond County6.5-0.7 pts
87Pope County6.3-1.2 pts
88Shelby County6.1-1 pts
89Grundy County6.1+1 pts
90Edgar County6-2.2 pts
91Monroe County5.7-0.5 pts
92Menard County5.3+0.3 pts
93Cumberland County4.8-1.7 pts
94Marshall County4.6-0.6 pts
95De Witt County4.6-2.1 pts
96Logan County4.2-2.1 pts
97Greene County4.2-4.1 pts
98Brown County4.1-1.6 pts
99Pulaski County3.5+0.6 pts
100Gallatin County3.3-0.8 pts
101Henderson County3.1+1.1 pts
102Calhoun County1.1-0.5 pts

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/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023. 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), 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023.

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), 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2023,
  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), 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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), 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat
L2  - https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-19-34/illinois-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-b27010.dat. Retrieved 2026-10-12.
ER  - 
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Rank Counties in Illinois by uninsured rate, ages 19 to 34 (US, ACS) using official data, and cite the source.
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Questions

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

Douglas County, with 24.1% in 2023, according to the U.S. Census Bureau.

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

Calhoun County, with 1.1% 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, 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