Data / Rankings / COPD in adults, local model estimate / Counties in Illinois

Counties in Illinois by COPD in adults, local model estimate

Alexander County had the highest COPD in adults, local model estimate of 102 counties in 2021, at 11.8%. Kendall County had the lowest, at 4.8%. The median was 8.5%. Source: the Centers for Disease Control and Prevention.

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Highest11.8Alexander County
Lowest4.8Kendall County
Median8.5102 counties

Map of counties, 2021

Adams County: 8.2 %Alexander County: 11.8 %Bond County: 8.7 %Boone County: 7.1 %Brown County: 7.5 %Bureau County: 8.6 %Calhoun County: 8.3 %Carroll County: 9.3 %Cass County: 8.8 %Champaign County: 5.5 %Christian County: 8.8 %Clark County: 7.8 %Clay County: 9.5 %Clinton County: 7.3 %Coles County: 7.9 %Cook County: 5.6 %Crawford County: 8.3 %Cumberland County: 8.1 %DeKalb County: 6 %De Witt County: 8.6 %Douglas County: 8.5 %DuPage County: 5 %Edgar County: 9.3 %Edwards County: 9.3 %Effingham County: 7.7 %Fayette County: 9.5 %Ford County: 8.4 %Franklin County: 10 %Fulton County: 8.9 %Gallatin County: 10.3 %Greene County: 9.2 %Grundy County: 6.3 %Hamilton County: 9.3 %Hancock County: 8.7 %Hardin County: 10.3 %Henderson County: 8.8 %Henry County: 7.8 %Iroquois County: 9.3 %Jackson County: 7.5 %Jasper County: 8.4 %Jefferson County: 8.6 %Jersey County: 7.4 %Jo Daviess County: 8.8 %Johnson County: 8.9 %Kane County: 5.9 %Kankakee County: 7.7 %Kendall County: 4.8 %Knox County: 9.3 %Lake County: 5.4 %LaSalle County: 8.1 %Lawrence County: 8.7 %Lee County: 8.1 %Livingston County: 8.5 %Logan County: 7.4 %McDonough County: 7.6 %McHenry County: 5.8 %McLean County: 5.7 %Macon County: 8.3 %Macoupin County: 9.2 %Madison County: 7.3 %Marion County: 9.4 %Marshall County: 8.8 %Mason County: 9.4 %Massac County: 9.6 %Menard County: 7.4 %Mercer County: 8.6 %Monroe County: 6.2 %Montgomery County: 8.9 %Morgan County: 8.8 %Moultrie County: 8.2 %Ogle County: 7.9 %Peoria County: 7.3 %Perry County: 9.5 %Piatt County: 6.9 %Pike County: 9.3 %Pope County: 10.9 %Pulaski County: 10.2 %Putnam County: 8.1 %Randolph County: 9 %Richland County: 8.7 %Rock Island County: 8 %St. Clair County: 7.1 %Saline County: 9.6 %Sangamon County: 7.3 %Schuyler County: 9 %Scott County: 8.3 %Shelby County: 8.6 %Stark County: 8.9 %Stephenson County: 8.9 %Tazewell County: 7.3 %Union County: 9.4 %Vermilion County: 9.4 %Wabash County: 9.1 %Warren County: 8 %Washington County: 7.7 %Wayne County: 9.8 %White County: 10 %Whiteside County: 8.2 %Will County: 5.5 %Williamson County: 8.1 %Winnebago County: 8.3 %Woodford County: 6.6 %
  • Under 7.3
  • 7.3 to 8
  • 8 to 8.4
  • 8.4 to 8.8
  • 8.8 to 9.3
  • 9.3 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), copd in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Alexander County: 11.8 %Alexander County11.8Pope County: 10.9 %Pope County10.9Gallatin County: 10.3 %Gallatin County10.3Hardin County: 10.3 %Hardin County10.3Pulaski County: 10.2 %Pulaski County10.2Franklin County: 10 %Franklin County10White County: 10 %White County10Wayne County: 9.8 %Wayne County9.8Massac County: 9.6 %Massac County9.6Saline County: 9.6 %Saline County9.6Clay County: 9.5 %Clay County9.5Fayette County: 9.5 %Fayette County9.5Perry County: 9.5 %Perry County9.5Marion County: 9.4 %Marion County9.4Mason County: 9.4 %Mason County9.4Union County: 9.4 %Union County9.4Vermilion County: 9.4 %Vermilion County9.4Carroll County: 9.3 %Carroll County9.3Edgar County: 9.3 %Edgar County9.3Edwards County: 9.3 %Edwards County9.3Hamilton County: 9.3 %Hamilton County9.3Iroquois County: 9.3 %Iroquois County9.3Knox County: 9.3 %Knox County9.3Pike County: 9.3 %Pike County9.3Greene County: 9.2 %Greene County9.2Macoupin County: 9.2 %Macoupin County9.2Wabash County: 9.1 %Wabash County9.1Randolph County: 9 %Randolph County9Schuyler County: 9 %Schuyler County9Fulton County: 8.9 %Fulton County8.9Johnson County: 8.9 %Johnson County8.9Montgomery County: 8.9 %Montgomery County8.9Stark County: 8.9 %Stark County8.9Stephenson County: 8.9 %Stephenson County8.9Cass County: 8.8 %Cass County8.8Christian County: 8.8 %Christian County8.8Henderson County: 8.8 %Henderson County8.8Jo Daviess County: 8.8 %Jo Daviess County8.8Marshall County: 8.8 %Marshall County8.8Morgan County: 8.8 %Morgan County8.8Alexander County: 11.8 %Alexander County11.8Pope County: 10.9 %Pope County10.9Gallatin County: 10.3 %Gallatin County10.3Hardin County: 10.3 %Hardin County10.3Pulaski County: 10.2 %Pulaski County10.2Franklin County: 10 %Franklin County10White County: 10 %White County10Wayne County: 9.8 %Wayne County9.8Massac County: 9.6 %Massac County9.6Saline County: 9.6 %Saline County9.6Clay County: 9.5 %Clay County9.5Fayette County: 9.5 %Fayette County9.5Perry County: 9.5 %Perry County9.5Marion County: 9.4 %Marion County9.4Mason County: 9.4 %Mason County9.4Union County: 9.4 %Union County9.4Vermilion County: 9.4 %Vermilion County9.4Carroll County: 9.3 %Carroll County9.3Edgar County: 9.3 %Edgar County9.3Edwards County: 9.3 %Edwards County9.3Hamilton County: 9.3 %Hamilton County9.3Iroquois County: 9.3 %Iroquois County9.3Knox County: 9.3 %Knox County9.3Pike County: 9.3 %Pike County9.3Greene County: 9.2 %Greene County9.2Macoupin County: 9.2 %Macoupin County9.2Wabash County: 9.1 %Wabash County9.1Randolph County: 9 %Randolph County9Schuyler County: 9 %Schuyler County9Fulton County: 8.9 %Fulton County8.9Johnson County: 8.9 %Johnson County8.9Montgomery County: 8.9 %Montgomery County8.9Stark County: 8.9 %Stark County8.9Stephenson County: 8.9 %Stephenson County8.9Cass County: 8.8 %Cass County8.8Christian County: 8.8 %Christian County8.8Henderson County: 8.8 %Henderson County8.8Jo Daviess County: 8.8 %Jo Daviess County8.8Marshall County: 8.8 %Marshall County8.8Morgan County: 8.8 %Morgan County8.8
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), copd in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Alexander County11.8
2Pope County10.9
3Gallatin County10.3
3Hardin County10.3
5Pulaski County10.2
6Franklin County10
6White County10
8Wayne County9.8
9Massac County9.6
9Saline County9.6
11Clay County9.5
11Fayette County9.5
11Perry County9.5
14Marion County9.4
14Mason County9.4
14Union County9.4
14Vermilion County9.4
18Carroll County9.3
18Edgar County9.3
18Edwards County9.3
18Hamilton County9.3
18Iroquois County9.3
18Knox County9.3
18Pike County9.3
25Greene County9.2
25Macoupin County9.2
27Wabash County9.1
28Randolph County9
28Schuyler County9
30Fulton County8.9
30Johnson County8.9
30Montgomery County8.9
30Stark County8.9
30Stephenson County8.9
35Cass County8.8
35Christian County8.8
35Henderson County8.8
35Jo Daviess County8.8
35Marshall County8.8
35Morgan County8.8
41Bond County8.7
41Hancock County8.7
41Lawrence County8.7
41Richland County8.7
45Bureau County8.6
45De Witt County8.6
45Jefferson County8.6
45Mercer County8.6
45Shelby County8.6
50Douglas County8.5
50Livingston County8.5
52Ford County8.4
52Jasper County8.4
54Calhoun County8.3
54Crawford County8.3
54Macon County8.3
54Scott County8.3
54Winnebago County8.3
59Adams County8.2
59Moultrie County8.2
59Whiteside County8.2
62Cumberland County8.1
62LaSalle County8.1
62Lee County8.1
62Putnam County8.1
62Williamson County8.1
67Rock Island County8
67Warren County8
69Coles County7.9
69Ogle County7.9
71Clark County7.8
71Henry County7.8
73Effingham County7.7
73Kankakee County7.7
73Washington County7.7
76McDonough County7.6
77Brown County7.5
77Jackson County7.5
79Jersey County7.4
79Logan County7.4
79Menard County7.4
82Clinton County7.3
82Madison County7.3
82Peoria County7.3
82Sangamon County7.3
82Tazewell County7.3
87Boone County7.1
87St. Clair County7.1
89Piatt County6.9
90Woodford County6.6
91Grundy County6.3
92Monroe County6.2
93DeKalb County6
94Kane County5.9
95McHenry County5.8
96McLean County5.7
97Cook County5.6
98Champaign County5.5
98Will County5.5
100Lake County5.4
101DuPage County5
102Kendall County4.8

Other periods

About this ranking

Percentage of adults who have ever been told by a doctor, nurse or other health professional that they had chronic obstructive pulmonary disease (COPD), emphysema or chronic bronchitis. 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), copd 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), copd in adults, crude prevalence (Counties in Illinois by COPD in adults, local model estimate, 2021) [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), copd in adults, crude prevalence, Counties in Illinois by COPD in adults, local model estimate, 2021. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-copd-rate-county-estimate/illinois-counties?period=2021. 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), copd in adults, crude prevalence. Counties in Illinois by COPD in adults, local model estimate, 2021. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-copd-rate-county-estimate/illinois-counties?period=2021.

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), copd in adults, crude prevalence, Counties in Illinois by COPD in adults, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-copd-rate-county-estimate/illinois-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_illinois_by_2021,
  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), copd in adults, crude prevalence: Counties in Illinois by COPD in adults, local model estimate, 2021}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-copd-rate-county-estimate/illinois-counties?period=2021. 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), copd 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), copd in adults, crude prevalence: Counties in Illinois by COPD in adults, local model estimate, 2021
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-copd-rate-county-estimate/illinois-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-copd-rate-county-estimate/illinois-counties?period=2021.
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), copd 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 COPD in adults, local model estimate using official data, and cite the source.
rank_places {"indicator":"adult_copd_rate_modelled","level":"province","within":"Illinois","limit":10}
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Questions

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

Alexander County, with 11.8% in 2021, according to the Centers for Disease Control and Prevention.

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

Kendall County, with 4.8% in 2021.

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), copd in adults, crude prevalence. Retrieved 2026-10-12.

COPD in adults, local model estimate: other rankings

Counties in Illinois: more rankings