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

Counties in Illinois by adult obesity rate, local model estimate

Alexander County had the highest adult obesity rate, local model estimate of 102 counties in 2022, at 42.8%. DuPage County had the lowest, at 29.5%. The median was 37%. Source: the Centers for Disease Control and Prevention.

Highest42.8Alexander County
Lowest29.5DuPage County
Median37102 counties

Top 40 counties, 2022

Alexander County: 42.8 %Alexander County42.8Pulaski County: 42.6 %Pulaski County42.6Stephenson County: 41.5 %Stephenson County41.5Vermilion County: 40.4 %Vermilion County40.4Brown County: 40.3 %Brown County40.3Franklin County: 39.7 %Franklin County39.7Kankakee County: 39.7 %Kankakee County39.7Schuyler County: 39.7 %Schuyler County39.7Saline County: 39.6 %Saline County39.6Boone County: 39.5 %Boone County39.5Fulton County: 39.4 %Fulton County39.4Perry County: 39.2 %Perry County39.2Adams County: 38.6 %Adams County38.6Jefferson County: 38.6 %Jefferson County38.6Gallatin County: 38.5 %Gallatin County38.5Cass County: 38.4 %Cass County38.4Clay County: 38.4 %Clay County38.4Logan County: 38.4 %Logan County38.4Massac County: 38.4 %Massac County38.4Williamson County: 38.4 %Williamson County38.4Iroquois County: 38.3 %Iroquois County38.3Marion County: 38.2 %Marion County38.2Macoupin County: 38.1 %Macoupin County38.1St. Clair County: 38.1 %St. Clair County38.1Winnebago County: 38.1 %Winnebago County38.1White County: 38 %White County38Hardin County: 37.9 %Hardin County37.9Knox County: 37.9 %Knox County37.9Sangamon County: 37.9 %Sangamon County37.9Greene County: 37.8 %Greene County37.8Ford County: 37.7 %Ford County37.7Lawrence County: 37.7 %Lawrence County37.7Livingston County: 37.7 %Livingston County37.7Cumberland County: 37.6 %Cumberland County37.6Lee County: 37.6 %Lee County37.6Bureau County: 37.5 %Bureau County37.5Jersey County: 37.5 %Jersey County37.5Kane County: 37.5 %Kane County37.5Hamilton County: 37.4 %Hamilton County37.4Richland County: 37.4 %Richland County37.4
%. 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

RankCounties2022 (%)Change on 2021
1Alexander County42.8-1 pts
2Pulaski County42.6+0.9 pts
3Stephenson County41.5+3.5 pts
4Vermilion County40.4+2.7 pts
5Brown County40.3+0.8 pts
6Franklin County39.7+0.2 pts
6Kankakee County39.7+2.1 pts
6Schuyler County39.7+1.5 pts
9Saline County39.6+1.2 pts
10Boone County39.5+5.3 pts
11Fulton County39.4+2.1 pts
12Perry County39.20 pts
13Adams County38.6+2.7 pts
13Jefferson County38.6+3.3 pts
15Gallatin County38.5+0.4 pts
16Cass County38.4+0.8 pts
16Clay County38.4+1.8 pts
16Logan County38.4+2.6 pts
16Massac County38.4+0.8 pts
16Williamson County38.4+3.1 pts
21Iroquois County38.3+0.6 pts
22Marion County38.2-1.5 pts
23Macoupin County38.1+4 pts
23St. Clair County38.1-5.8 pts
23Winnebago County38.1-3.8 pts
26White County38-0.9 pts
27Hardin County37.9+0.3 pts
27Knox County37.9-3.3 pts
27Sangamon County37.9+3.1 pts
30Greene County37.8+0.3 pts
31Ford County37.7+0.9 pts
31Lawrence County37.70 pts
31Livingston County37.7-1 pts
34Cumberland County37.6+1.7 pts
34Lee County37.6+0.5 pts
36Bureau County37.5+0.1 pts
36Jersey County37.5+4.3 pts
36Kane County37.5+1.8 pts
39Hamilton County37.4+0.2 pts
39Richland County37.4+0.5 pts
41Edgar County37.3+0.8 pts
41Randolph County37.3-1.6 pts
43Pope County37.2-0.1 pts
43Stark County37.2+1.5 pts
43Wabash County37.2+0.6 pts
46Coles County37.1+3.3 pts
46Pike County37.1-0.7 pts
48Edwards County37-0.6 pts
48Fayette County37-2.1 pts
48Kendall County37+3.9 pts
48Union County37+0.3 pts
48Wayne County37+0.2 pts
53Mercer County36.9+0.3 pts
53Morgan County36.9-0.7 pts
53Rock Island County36.9-0.9 pts
53Warren County36.9+0.8 pts
57Crawford County36.8+0.4 pts
58Henderson County36.7+1.4 pts
58LaSalle County36.7+0.8 pts
58Shelby County36.7+0.6 pts
58Will County36.7+2.5 pts
62Bond County36.6-2 pts
62De Witt County36.6-0.9 pts
64Macon County36.5-1.7 pts
64Marshall County36.5+0.5 pts
66Christian County36.4-2.1 pts
66Douglas County36.4+0.3 pts
68McDonough County36.2+0.4 pts
68Montgomery County36.2-1 pts
70Jackson County36.1+2.5 pts
71Johnson County36-2.8 pts
72Ogle County35.8+0.9 pts
72Washington County35.8+0.2 pts
74Carroll County35.6-2.1 pts
74Mason County35.6-3.4 pts
76Tazewell County35.5-0.3 pts
77Clark County35.4+0.6 pts
77Scott County35.4-0.7 pts
79Clinton County35.3+0.3 pts
79Grundy County35.3+0.1 pts
79Madison County35.3-2.8 pts
82Effingham County35.2-0.5 pts
82Menard County35.2-0.6 pts
82Moultrie County35.2+0.3 pts
85Jasper County35-1.3 pts
85Peoria County35-0.9 pts
87Whiteside County34.9-2.9 pts
88Hancock County34.8-2.2 pts
89Calhoun County34.70 pts
89McHenry County34.7+4 pts
91Putnam County34.4-1.3 pts
92Henry County34.3-0.7 pts
92Jo Daviess County34.3-1.7 pts
92Woodford County34.3+0.5 pts
95McLean County34-0.1 pts
96DeKalb County33.9-1.6 pts
96Piatt County33.9-0.6 pts
98Monroe County33.2+1.1 pts
99Cook County32.8+1.3 pts
100Champaign County32.5+2.9 pts
101Lake County31.8+0.6 pts
102DuPage County29.5-1 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, 2022) [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, 2022. 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?period=2022. 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, 2022. 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?period=2022.

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, 2022 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-obesity-rate-county-estimate/illinois-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_illinois_by_2022,
  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, 2022}},
  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?period=2022. 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, 2022
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?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-obesity-rate-county-estimate/illinois-counties?period=2022.
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?

Alexander County, with 42.8% in 2022, according to the Centers for Disease Control and Prevention.

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

DuPage County, with 29.5% in 2022.

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