Data / Rankings / Diagnosed diabetes in adults, local model estimate / Counties in Illinois

Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023

Alexander County had the highest diagnosed diabetes in adults, local model estimate of 102 counties in 2023, at 19%. Kendall County had the lowest, at 9.4%. The median was 12.6%. Source: the Centers for Disease Control and Prevention.

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Highest19Alexander County
Lowest9.4Kendall County
Median12.6102 counties

Map of counties, 2023

Adams County: 12 %Alexander County: 19 %Bond County: 11.6 %Boone County: 12.2 %Brown County: 11.7 %Bureau County: 13.2 %Calhoun County: 11.9 %Carroll County: 13.3 %Cass County: 13.4 %Champaign County: 9.6 %Christian County: 12.3 %Clark County: 12 %Clay County: 13.9 %Clinton County: 11.3 %Coles County: 11.4 %Cook County: 11.8 %Crawford County: 12.1 %Cumberland County: 11.9 %DeKalb County: 10.3 %De Witt County: 12.2 %Douglas County: 11.7 %DuPage County: 10 %Edgar County: 13.6 %Edwards County: 14.1 %Effingham County: 11.3 %Fayette County: 12.7 %Ford County: 12.4 %Franklin County: 13.9 %Fulton County: 13 %Gallatin County: 14.6 %Greene County: 13.2 %Grundy County: 10.3 %Hamilton County: 13.9 %Hancock County: 13.2 %Hardin County: 14.7 %Henderson County: 14.1 %Henry County: 11.9 %Iroquois County: 13.9 %Jackson County: 11.6 %Jasper County: 12 %Jefferson County: 13 %Jersey County: 11.7 %Jo Daviess County: 13.2 %Johnson County: 12.9 %Kane County: 11.5 %Kankakee County: 13 %Kendall County: 9.4 %Knox County: 13.5 %Lake County: 11.2 %LaSalle County: 12.4 %Lawrence County: 12.8 %Lee County: 12.8 %Livingston County: 12.2 %Logan County: 11.6 %McDonough County: 11.4 %McHenry County: 10.5 %McLean County: 9.5 %Macon County: 13.3 %Macoupin County: 12.8 %Madison County: 11.2 %Marion County: 13.3 %Marshall County: 13 %Mason County: 13.3 %Massac County: 14.1 %Menard County: 11.7 %Mercer County: 12.4 %Monroe County: 10.1 %Montgomery County: 12.6 %Morgan County: 12.6 %Moultrie County: 11.6 %Ogle County: 12.2 %Peoria County: 12.6 %Perry County: 13.2 %Piatt County: 10.9 %Pike County: 13.3 %Pope County: 14.9 %Pulaski County: 18.4 %Putnam County: 12.1 %Randolph County: 12.9 %Richland County: 12.5 %Rock Island County: 13.1 %St. Clair County: 13.1 %Saline County: 13.5 %Sangamon County: 11.9 %Schuyler County: 14.4 %Scott County: 12.3 %Shelby County: 13 %Stark County: 12.7 %Stephenson County: 13.9 %Tazewell County: 11.2 %Union County: 14.1 %Vermilion County: 14.4 %Wabash County: 13.3 %Warren County: 12.3 %Washington County: 11.7 %Wayne County: 13.6 %White County: 14.5 %Whiteside County: 13 %Will County: 10.7 %Williamson County: 12.4 %Winnebago County: 13.9 %Woodford County: 10.6 %
  • Under 11
  • 11 to 12
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  • 13 to 14
  • 14 and over
%, 2023. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Alexander County: 19 %Alexander County19Pulaski County: 18.4 %Pulaski County18.4Pope County: 14.9 %Pope County14.9Hardin County: 14.7 %Hardin County14.7Gallatin County: 14.6 %Gallatin County14.6White County: 14.5 %White County14.5Schuyler County: 14.4 %Schuyler County14.4Vermilion County: 14.4 %Vermilion County14.4Edwards County: 14.1 %Edwards County14.1Henderson County: 14.1 %Henderson County14.1Massac County: 14.1 %Massac County14.1Union County: 14.1 %Union County14.1Clay County: 13.9 %Clay County13.9Franklin County: 13.9 %Franklin County13.9Hamilton County: 13.9 %Hamilton County13.9Iroquois County: 13.9 %Iroquois County13.9Stephenson County: 13.9 %Stephenson County13.9Winnebago County: 13.9 %Winnebago County13.9Edgar County: 13.6 %Edgar County13.6Wayne County: 13.6 %Wayne County13.6Knox County: 13.5 %Knox County13.5Saline County: 13.5 %Saline County13.5Cass County: 13.4 %Cass County13.4Carroll County: 13.3 %Carroll County13.3Macon County: 13.3 %Macon County13.3Marion County: 13.3 %Marion County13.3Mason County: 13.3 %Mason County13.3Pike County: 13.3 %Pike County13.3Wabash County: 13.3 %Wabash County13.3Bureau County: 13.2 %Bureau County13.2Greene County: 13.2 %Greene County13.2Hancock County: 13.2 %Hancock County13.2Jo Daviess County: 13.2 %Jo Daviess County13.2Perry County: 13.2 %Perry County13.2Rock Island County: 13.1 %Rock Island County13.1St. Clair County: 13.1 %St. Clair County13.1Fulton County: 13 %Fulton County13Jefferson County: 13 %Jefferson County13Kankakee County: 13 %Kankakee County13Marshall County: 13 %Marshall County13Alexander County: 19 %Alexander County19Pulaski County: 18.4 %Pulaski County18.4Pope County: 14.9 %Pope County14.9Hardin County: 14.7 %Hardin County14.7Gallatin County: 14.6 %Gallatin County14.6White County: 14.5 %White County14.5Schuyler County: 14.4 %Schuyler County14.4Vermilion County: 14.4 %Vermilion County14.4Edwards County: 14.1 %Edwards County14.1Henderson County: 14.1 %Henderson County14.1Massac County: 14.1 %Massac County14.1Union County: 14.1 %Union County14.1Clay County: 13.9 %Clay County13.9Franklin County: 13.9 %Franklin County13.9Hamilton County: 13.9 %Hamilton County13.9Iroquois County: 13.9 %Iroquois County13.9Stephenson County: 13.9 %Stephenson County13.9Winnebago County: 13.9 %Winnebago County13.9Edgar County: 13.6 %Edgar County13.6Wayne County: 13.6 %Wayne County13.6Knox County: 13.5 %Knox County13.5Saline County: 13.5 %Saline County13.5Cass County: 13.4 %Cass County13.4Carroll County: 13.3 %Carroll County13.3Macon County: 13.3 %Macon County13.3Marion County: 13.3 %Marion County13.3Mason County: 13.3 %Mason County13.3Pike County: 13.3 %Pike County13.3Wabash County: 13.3 %Wabash County13.3Bureau County: 13.2 %Bureau County13.2Greene County: 13.2 %Greene County13.2Hancock County: 13.2 %Hancock County13.2Jo Daviess County: 13.2 %Jo Daviess County13.2Perry County: 13.2 %Perry County13.2Rock Island County: 13.1 %Rock Island County13.1St. Clair County: 13.1 %St. Clair County13.1Fulton County: 13 %Fulton County13Jefferson County: 13 %Jefferson County13Kankakee County: 13 %Kankakee County13Marshall County: 13 %Marshall County13
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Alexander County19+0.6 pts
2Pulaski County18.4+1.2 pts
3Pope County14.9-0.2 pts
4Hardin County14.70 pts
5Gallatin County14.6-0.2 pts
6White County14.50 pts
7Schuyler County14.4+0.6 pts
7Vermilion County14.4+0.4 pts
9Edwards County14.1+1.5 pts
9Henderson County14.1+0.6 pts
9Massac County14.1-0.3 pts
9Union County14.1+0.9 pts
13Clay County13.9+0.4 pts
13Franklin County13.9-0.2 pts
13Hamilton County13.9+0.6 pts
13Iroquois County13.9+0.4 pts
13Stephenson County13.90 pts
13Winnebago County13.9+0.3 pts
19Edgar County13.60 pts
19Wayne County13.6+0.5 pts
21Knox County13.5-0.2 pts
21Saline County13.5-0.3 pts
23Cass County13.4+0.3 pts
24Carroll County13.3+0.3 pts
24Macon County13.3+0.4 pts
24Marion County13.30 pts
24Mason County13.3+0.3 pts
24Pike County13.3+0.4 pts
24Wabash County13.3-0.2 pts
30Bureau County13.2-1.2 pts
30Greene County13.2+0.1 pts
30Hancock County13.2+0.6 pts
30Jo Daviess County13.2-0.3 pts
30Perry County13.2-0.9 pts
35Rock Island County13.1+0.3 pts
35St. Clair County13.1+0.3 pts
37Fulton County13-0.5 pts
37Jefferson County13+0.2 pts
37Kankakee County13+0.3 pts
37Marshall County13-0.3 pts
37Shelby County130 pts
37Whiteside County13+0.7 pts
43Johnson County12.9+0.6 pts
43Randolph County12.9+0.1 pts
45Lawrence County12.8-0.5 pts
45Lee County12.8-0.5 pts
45Macoupin County12.8-0.4 pts
48Fayette County12.7+0.5 pts
48Stark County12.7+0.1 pts
50Montgomery County12.6+0.1 pts
50Morgan County12.60 pts
50Peoria County12.6+0.6 pts
53Richland County12.5-0.1 pts
54Ford County12.4+0.8 pts
54LaSalle County12.4-0.2 pts
54Mercer County12.4-0.1 pts
54Williamson County12.4+0.1 pts
58Christian County12.30 pts
58Scott County12.3+0.5 pts
58Warren County12.3-0.7 pts
61Boone County12.2-0.2 pts
61De Witt County12.2+0.2 pts
61Livingston County12.20 pts
61Ogle County12.2-0.5 pts
65Crawford County12.1+0.1 pts
65Putnam County12.1+0.1 pts
67Adams County12+0.3 pts
67Clark County12+0.4 pts
67Jasper County12+0.2 pts
70Calhoun County11.9-0.3 pts
70Cumberland County11.9-0.3 pts
70Henry County11.9+0.8 pts
70Sangamon County11.9+0.4 pts
74Cook County11.8-0.1 pts
75Brown County11.7-0.1 pts
75Douglas County11.7-0.2 pts
75Jersey County11.70 pts
75Menard County11.7+0.2 pts
75Washington County11.7+0.2 pts
80Bond County11.6-1 pts
80Jackson County11.6-0.3 pts
80Logan County11.6-0.5 pts
80Moultrie County11.6+0.5 pts
84Kane County11.5+0.2 pts
85Coles County11.4-0.3 pts
85McDonough County11.4-0.4 pts
87Clinton County11.3+0.3 pts
87Effingham County11.3+0.6 pts
89Lake County11.2-0.7 pts
89Madison County11.2+0.3 pts
89Tazewell County11.2-0.3 pts
92Piatt County10.9-0.1 pts
93Will County10.7-0.2 pts
94Woodford County10.6-1.1 pts
95McHenry County10.5-0.3 pts
96DeKalb County10.3+0.4 pts
96Grundy County10.3+0.1 pts
98Monroe County10.1-0.1 pts
99DuPage County10-0.9 pts
100Champaign County9.6+0.3 pts
101McLean County9.5-0.5 pts
102Kendall County9.4-0.1 pts

Other periods

About this ranking

Percentage of adults who report being told by a doctor or other health professional that they have diabetes, other than diabetes only during pregnancy. Model-based estimate for adults aged 18 and over from CDC PLACES. Crude prevalence, not age-adjusted.

US counties and cities (incorporated places of 10,000 or more). CDC PLACES combines Behavioral Risk Factor Surveillance System (BRFSS) answers with local population data through multilevel regression and poststratification, so a county or city value is a model estimate, not a survey count. The year is the BRFSS survey year, not the release year. CDC says the method does not support tracking change in a place over time, and each annual release can change the model, so values for different years are not strictly comparable. A state is missing in a year when its BRFSS data did not meet standards (Kentucky and Pennsylvania in 2023, Florida in 2021). Connecticut counties appear as its nine planning regions from 2022; its eight former counties are not served. City values for 2021 come from the 2023 release, built on 2010 Census place boundaries; later years use 2020 boundaries.

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

Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.

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

Centers for Disease Control and Prevention. (2025). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence (Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023) [Data set]. Retrieved October 12, 2026, from https://www.cdc.gov/places/

MLA 9

PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

Centers for Disease Control and Prevention. 2025. PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties.

Harvard

Centers for Disease Control and Prevention (2025) PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence, Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_illinois_by_2023,
  author = {{Centers for Disease Control and Prevention}},
  title = {{PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties. Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.},
}
RIS
TY  - DATA
AU  - Centers for Disease Control and Prevention
TI  - PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence: Counties in Illinois by diagnosed diabetes in adults, local model estimate, 2023
PY  - 2025
DA  - 2025/12/04
PB  - Centers for Disease Control and Prevention
DB  - Invokely
UR  - https://www.cdc.gov/places/
L2  - https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/illinois-counties.
N1  - Publisher attribution: Centers for Disease Control and Prevention (CDC). PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. https://www.cdc.gov/places/. Retrieved 2026-10-12. These data are available free from CDC. Use does not imply endorsement by CDC, ATSDR, HHS or the United States Government.
ER  -
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Rank Counties in Illinois by diagnosed diabetes in adults, local model estimate using official data, and cite the source.
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Questions

Which county has the highest diagnosed diabetes in adults, local model estimate?

Alexander County, with 19% in 2023, according to the Centers for Disease Control and Prevention.

Which county has the lowest diagnosed diabetes in adults, local model estimate?

Kendall County, with 9.4% in 2023.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Diagnosed diabetes in adults, local model estimate: other rankings

Counties in Illinois: more rankings