Data / Rankings / Adult obesity rate, local model estimate / Counties in Illinois

Counties in Illinois by adult obesity rate, local model estimate, 2023

Pulaski County had the highest adult obesity rate, local model estimate of 102 counties in 2023, at 45.6%. DuPage County had the lowest, at 29.2%. The median was 38.8%. Source: the Centers for Disease Control and Prevention.

Highest45.6Pulaski County
Lowest29.2DuPage County
Median38.8102 counties

Top 40 counties, 2023

Pulaski County: 45.6 %Pulaski County45.6Alexander County: 45.3 %Alexander County45.3Vermilion County: 43.8 %Vermilion County43.8Macon County: 42.1 %Macon County42.1Winnebago County: 42 %Winnebago County42Franklin County: 41.6 %Franklin County41.6Brown County: 41.5 %Brown County41.5Clay County: 41.5 %Clay County41.5Johnson County: 41.4 %Johnson County41.4Ogle County: 40.9 %Ogle County40.9Gallatin County: 40.8 %Gallatin County40.8Massac County: 40.8 %Massac County40.8Lawrence County: 40.7 %Lawrence County40.7Perry County: 40.7 %Perry County40.7Cass County: 40.6 %Cass County40.6Iroquois County: 40.6 %Iroquois County40.6Pike County: 40.6 %Pike County40.6Stephenson County: 40.6 %Stephenson County40.6Schuyler County: 40.4 %Schuyler County40.4Edwards County: 40.3 %Edwards County40.3Saline County: 40.3 %Saline County40.3Clinton County: 40.2 %Clinton County40.2Greene County: 40.2 %Greene County40.2Crawford County: 40.1 %Crawford County40.1Williamson County: 40.1 %Williamson County40.1Hamilton County: 40 %Hamilton County40Fulton County: 39.9 %Fulton County39.9Morgan County: 39.9 %Morgan County39.9Wayne County: 39.9 %Wayne County39.9Fayette County: 39.8 %Fayette County39.8Jackson County: 39.8 %Jackson County39.8Jefferson County: 39.8 %Jefferson County39.8Kankakee County: 39.8 %Kankakee County39.8Union County: 39.8 %Union County39.8Wabash County: 39.8 %Wabash County39.8Hardin County: 39.7 %Hardin County39.7Kendall County: 39.7 %Kendall County39.7Pope County: 39.6 %Pope County39.6Rock Island County: 39.6 %Rock Island County39.6Sangamon County: 39.6 %Sangamon County39.6
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), adult obesity rate, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Pulaski County45.6+3 pts
2Alexander County45.3+2.5 pts
3Vermilion County43.8+3.4 pts
4Macon County42.1+5.6 pts
5Winnebago County42+3.9 pts
6Franklin County41.6+1.9 pts
7Brown County41.5+1.2 pts
7Clay County41.5+3.1 pts
9Johnson County41.4+5.4 pts
10Ogle County40.9+5.1 pts
11Gallatin County40.8+2.3 pts
11Massac County40.8+2.4 pts
13Lawrence County40.7+3 pts
13Perry County40.7+1.5 pts
15Cass County40.6+2.2 pts
15Iroquois County40.6+2.3 pts
15Pike County40.6+3.5 pts
15Stephenson County40.6-0.9 pts
19Schuyler County40.4+0.7 pts
20Edwards County40.3+3.3 pts
20Saline County40.3+0.7 pts
22Clinton County40.2+4.9 pts
22Greene County40.2+2.4 pts
24Crawford County40.1+3.3 pts
24Williamson County40.1+1.7 pts
26Hamilton County40+2.6 pts
27Fulton County39.9+0.5 pts
27Morgan County39.9+3 pts
27Wayne County39.9+2.9 pts
30Fayette County39.8+2.8 pts
30Jackson County39.8+3.7 pts
30Jefferson County39.8+1.2 pts
30Kankakee County39.8+0.1 pts
30Union County39.8+2.8 pts
30Wabash County39.8+2.6 pts
36Hardin County39.7+1.8 pts
36Kendall County39.7+2.7 pts
38Pope County39.6+2.4 pts
38Rock Island County39.6+2.7 pts
38Sangamon County39.6+1.7 pts
41Marion County39.5+1.3 pts
42Richland County39.4+2 pts
43Knox County39.2+1.3 pts
43White County39.2+1.2 pts
45Montgomery County39.1+2.9 pts
46Bond County39+2.4 pts
46Jersey County39+1.5 pts
48Lee County38.9+1.3 pts
49Carroll County38.8+3.2 pts
49Hancock County38.8+4 pts
49Randolph County38.8+1.5 pts
49St. Clair County38.8+0.7 pts
53Cumberland County38.7+1.1 pts
53Madison County38.7+3.4 pts
55Henderson County38.6+1.9 pts
55Marshall County38.6+2.1 pts
55Mercer County38.6+1.7 pts
58Douglas County38.5+2.1 pts
58Logan County38.5+0.1 pts
60Moultrie County38.4+3.2 pts
60Scott County38.4+3 pts
62De Witt County38.2+1.6 pts
62Jasper County38.2+3.2 pts
62Stark County38.2+1 pts
65Bureau County38.1+0.6 pts
65Christian County38.1+1.7 pts
67Will County38+1.3 pts
68Menard County37.9+2.7 pts
69Adams County37.8-0.8 pts
69LaSalle County37.8+1.1 pts
71Coles County37.7+0.6 pts
71Ford County37.70 pts
73Shelby County37.6+0.9 pts
74Edgar County37.5+0.2 pts
75Clark County37.3+1.9 pts
75Mason County37.3+1.7 pts
75Woodford County37.3+3 pts
78Macoupin County37-1.1 pts
78Warren County37+0.1 pts
80Henry County36.9+2.6 pts
81Boone County36.8-2.7 pts
81Washington County36.8+1 pts
83Grundy County36.4+1.1 pts
84McDonough County36.3+0.1 pts
84Tazewell County36.3+0.8 pts
86Whiteside County36.2+1.3 pts
87Jo Daviess County36.1+1.8 pts
87Putnam County36.1+1.7 pts
89Livingston County35.9-1.8 pts
90Monroe County35.5+2.3 pts
91Calhoun County35.3+0.6 pts
92DeKalb County35.1+1.2 pts
92Kane County35.1-2.4 pts
92Piatt County35.1+1.2 pts
95Peoria County34.8-0.2 pts
96McLean County34.5+0.5 pts
97Effingham County34.3-0.9 pts
98Lake County32.9+1.1 pts
99McHenry County32.1-2.6 pts
100Champaign County31.1-1.4 pts
101Cook County31-1.8 pts
102DuPage County29.2-0.3 pts

Other periods

About this ranking

Percentage of adults with a body mass index of 30 or more, calculated from self-reported weight and height. 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. State and national values come from direct BRFSS estimates under adult_obesity_rate.

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), adult obesity rate, 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), adult obesity rate, crude prevalence (Counties in Illinois by adult obesity rate, 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), adult obesity rate, crude prevalence, Counties in Illinois by adult obesity rate, local model estimate, 2023. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence. Counties in Illinois by adult obesity rate, local model estimate, 2023. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence, Counties in Illinois by adult obesity rate, local model estimate, 2023 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence: Counties in Illinois by adult obesity rate, 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-obesity-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), adult obesity rate, 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), adult obesity rate, crude prevalence: Counties in Illinois by adult obesity rate, 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-obesity-rate-county-estimate/illinois-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, 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 adult obesity rate, local model estimate using official data, and cite the source.
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Questions

Which county has the highest adult obesity rate, local model estimate?

Pulaski County, with 45.6% in 2023, according to the Centers for Disease Control and Prevention.

Which county has the lowest adult obesity rate, local model estimate?

DuPage County, with 29.2% 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), adult obesity rate, crude prevalence. Retrieved 2026-10-12.

Adult obesity rate, local model estimate: other rankings

Counties in Illinois: more rankings