Data / Rankings / Current asthma in adults, local model estimate / Counties in Illinois

Counties in Illinois by current asthma in adults, local model estimate, 2023

Alexander County had the highest current asthma in adults, local model estimate of 102 counties in 2023, at 11.7%. DuPage County had the lowest, at 8.9%. The median was 10.4%. Source: the Centers for Disease Control and Prevention.

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Highest11.7Alexander County
Lowest8.9DuPage County
Median10.4102 counties

Map of counties, 2023

Adams County: 10.3 %Alexander County: 11.7 %Bond County: 10.5 %Boone County: 10 %Brown County: 10 %Bureau County: 10.2 %Calhoun County: 10.1 %Carroll County: 10.1 %Cass County: 10.2 %Champaign County: 10.1 %Christian County: 10.3 %Clark County: 10.3 %Clay County: 10.8 %Clinton County: 10.3 %Coles County: 10.8 %Cook County: 9.8 %Crawford County: 10.4 %Cumberland County: 10.3 %DeKalb County: 10.4 %De Witt County: 10.4 %Douglas County: 10.4 %DuPage County: 8.9 %Edgar County: 10.5 %Edwards County: 10.8 %Effingham County: 10.2 %Fayette County: 10.4 %Ford County: 10.6 %Franklin County: 10.9 %Fulton County: 10.5 %Gallatin County: 10.8 %Greene County: 10.7 %Grundy County: 10.1 %Hamilton County: 10.7 %Hancock County: 10.3 %Hardin County: 10.6 %Henderson County: 10.2 %Henry County: 10.2 %Iroquois County: 10.5 %Jackson County: 10.8 %Jasper County: 10.2 %Jefferson County: 10.6 %Jersey County: 10.3 %Jo Daviess County: 9.9 %Johnson County: 10.2 %Kane County: 9.3 %Kankakee County: 10.7 %Kendall County: 9.5 %Knox County: 10.6 %Lake County: 9.1 %LaSalle County: 10.3 %Lawrence County: 10.5 %Lee County: 10.2 %Livingston County: 10.5 %Logan County: 10.4 %McDonough County: 10.6 %McHenry County: 9.6 %McLean County: 10.3 %Macon County: 10.8 %Macoupin County: 10.6 %Madison County: 10.5 %Marion County: 10.8 %Marshall County: 10.4 %Mason County: 10.5 %Massac County: 10.9 %Menard County: 10.4 %Mercer County: 10.3 %Monroe County: 9.9 %Montgomery County: 10.3 %Morgan County: 10.5 %Moultrie County: 10.7 %Ogle County: 10.1 %Peoria County: 10.6 %Perry County: 10.5 %Piatt County: 10 %Pike County: 10.6 %Pope County: 10.3 %Pulaski County: 11.6 %Putnam County: 9.9 %Randolph County: 10.4 %Richland County: 10.5 %Rock Island County: 10.5 %St. Clair County: 11.1 %Saline County: 10.9 %Sangamon County: 10.5 %Schuyler County: 10.3 %Scott County: 10.4 %Shelby County: 10.4 %Stark County: 10.3 %Stephenson County: 10.6 %Tazewell County: 10.3 %Union County: 10.7 %Vermilion County: 10.9 %Wabash County: 10.6 %Warren County: 10.4 %Washington County: 10.2 %Wayne County: 10.7 %White County: 10.9 %Whiteside County: 10.2 %Will County: 9.7 %Williamson County: 10.5 %Winnebago County: 10.6 %Woodford County: 10.1 %
  • Under 10
  • 10 to 11
  • 11 and over
%, 2023. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), current asthma in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Alexander County: 11.7 %Alexander County11.7Pulaski County: 11.6 %Pulaski County11.6St. Clair County: 11.1 %St. Clair County11.1Franklin County: 10.9 %Franklin County10.9Massac County: 10.9 %Massac County10.9Saline County: 10.9 %Saline County10.9Vermilion County: 10.9 %Vermilion County10.9White County: 10.9 %White County10.9Clay County: 10.8 %Clay County10.8Coles County: 10.8 %Coles County10.8Edwards County: 10.8 %Edwards County10.8Gallatin County: 10.8 %Gallatin County10.8Jackson County: 10.8 %Jackson County10.8Macon County: 10.8 %Macon County10.8Marion County: 10.8 %Marion County10.8Greene County: 10.7 %Greene County10.7Hamilton County: 10.7 %Hamilton County10.7Kankakee County: 10.7 %Kankakee County10.7Moultrie County: 10.7 %Moultrie County10.7Union County: 10.7 %Union County10.7Wayne County: 10.7 %Wayne County10.7Ford County: 10.6 %Ford County10.6Hardin County: 10.6 %Hardin County10.6Jefferson County: 10.6 %Jefferson County10.6Knox County: 10.6 %Knox County10.6Macoupin County: 10.6 %Macoupin County10.6McDonough County: 10.6 %McDonough County10.6Peoria County: 10.6 %Peoria County10.6Pike County: 10.6 %Pike County10.6Stephenson County: 10.6 %Stephenson County10.6Wabash County: 10.6 %Wabash County10.6Winnebago County: 10.6 %Winnebago County10.6Bond County: 10.5 %Bond County10.5Edgar County: 10.5 %Edgar County10.5Fulton County: 10.5 %Fulton County10.5Iroquois County: 10.5 %Iroquois County10.5Lawrence County: 10.5 %Lawrence County10.5Livingston County: 10.5 %Livingston County10.5Madison County: 10.5 %Madison County10.5Mason County: 10.5 %Mason County10.5Alexander County: 11.7 %Alexander County11.7Pulaski County: 11.6 %Pulaski County11.6St. Clair County: 11.1 %St. Clair County11.1Franklin County: 10.9 %Franklin County10.9Massac County: 10.9 %Massac County10.9Saline County: 10.9 %Saline County10.9Vermilion County: 10.9 %Vermilion County10.9White County: 10.9 %White County10.9Clay County: 10.8 %Clay County10.8Coles County: 10.8 %Coles County10.8Edwards County: 10.8 %Edwards County10.8Gallatin County: 10.8 %Gallatin County10.8Jackson County: 10.8 %Jackson County10.8Macon County: 10.8 %Macon County10.8Marion County: 10.8 %Marion County10.8Greene County: 10.7 %Greene County10.7Hamilton County: 10.7 %Hamilton County10.7Kankakee County: 10.7 %Kankakee County10.7Moultrie County: 10.7 %Moultrie County10.7Union County: 10.7 %Union County10.7Wayne County: 10.7 %Wayne County10.7Ford County: 10.6 %Ford County10.6Hardin County: 10.6 %Hardin County10.6Jefferson County: 10.6 %Jefferson County10.6Knox County: 10.6 %Knox County10.6Macoupin County: 10.6 %Macoupin County10.6McDonough County: 10.6 %McDonough County10.6Peoria County: 10.6 %Peoria County10.6Pike County: 10.6 %Pike County10.6Stephenson County: 10.6 %Stephenson County10.6Wabash County: 10.6 %Wabash County10.6Winnebago County: 10.6 %Winnebago County10.6Bond County: 10.5 %Bond County10.5Edgar County: 10.5 %Edgar County10.5Fulton County: 10.5 %Fulton County10.5Iroquois County: 10.5 %Iroquois County10.5Lawrence County: 10.5 %Lawrence County10.5Livingston County: 10.5 %Livingston County10.5Madison County: 10.5 %Madison County10.5Mason County: 10.5 %Mason County10.5
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), current asthma in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Alexander County11.7+0.4 pts
2Pulaski County11.6+0.4 pts
3St. Clair County11.1+0.6 pts
4Franklin County10.9+0.3 pts
4Massac County10.9+0.3 pts
4Saline County10.90 pts
4Vermilion County10.9+0.3 pts
4White County10.90 pts
9Clay County10.8+0.1 pts
9Coles County10.8+0.1 pts
9Edwards County10.8+0.6 pts
9Gallatin County10.8+0.2 pts
9Jackson County10.8+0.1 pts
9Macon County10.8+0.4 pts
9Marion County10.80 pts
16Greene County10.7+0.1 pts
16Hamilton County10.7+0.1 pts
16Kankakee County10.7+0.4 pts
16Moultrie County10.7+0.5 pts
16Union County10.7+0.7 pts
16Wayne County10.7+0.4 pts
22Ford County10.6+0.3 pts
22Hardin County10.6+0.3 pts
22Jefferson County10.6+0.2 pts
22Knox County10.6+0.2 pts
22Macoupin County10.6+0.3 pts
22McDonough County10.6-0.1 pts
22Peoria County10.6+0.3 pts
22Pike County10.6+0.5 pts
22Stephenson County10.6+0.1 pts
22Wabash County10.6+0.3 pts
22Winnebago County10.6-0.3 pts
33Bond County10.5-0.3 pts
33Edgar County10.5+0.2 pts
33Fulton County10.50 pts
33Iroquois County10.5+0.4 pts
33Lawrence County10.50 pts
33Livingston County10.5+0.3 pts
33Madison County10.5+0.4 pts
33Mason County10.5+0.4 pts
33Morgan County10.5+0.1 pts
33Perry County10.5-0.1 pts
33Richland County10.5+0.4 pts
33Rock Island County10.5+0.5 pts
33Sangamon County10.5+0.2 pts
33Williamson County10.5+0.3 pts
47Crawford County10.4+0.2 pts
47De Witt County10.4+0.3 pts
47DeKalb County10.4+0.3 pts
47Douglas County10.4+0.1 pts
47Fayette County10.4+0.5 pts
47Logan County10.40 pts
47Marshall County10.4+0.1 pts
47Menard County10.4+0.2 pts
47Randolph County10.4+0.4 pts
47Scott County10.4+0.6 pts
47Shelby County10.40 pts
47Warren County10.40 pts
59Adams County10.3+0.3 pts
59Christian County10.3+0.5 pts
59Clark County10.3+0.5 pts
59Clinton County10.3+0.5 pts
59Cumberland County10.3+0.1 pts
59Hancock County10.3+0.5 pts
59Jersey County10.3+0.2 pts
59LaSalle County10.3+0.2 pts
59McLean County10.3+0.2 pts
59Mercer County10.3+0.4 pts
59Montgomery County10.3+0.5 pts
59Pope County10.3+0.4 pts
59Schuyler County10.3+0.4 pts
59Stark County10.3+0.1 pts
59Tazewell County10.3+0.4 pts
74Bureau County10.2-0.2 pts
74Cass County10.2+0.2 pts
74Effingham County10.2+0.6 pts
74Henderson County10.2+0.4 pts
74Henry County10.2+0.5 pts
74Jasper County10.2+0.3 pts
74Johnson County10.2+0.6 pts
74Lee County10.20 pts
74Washington County10.2+0.7 pts
74Whiteside County10.2+0.4 pts
84Calhoun County10.1+0.8 pts
84Carroll County10.1+0.7 pts
84Champaign County10.1+0.2 pts
84Grundy County10.1+0.4 pts
84Ogle County10.1-0.3 pts
84Woodford County10.1-0.2 pts
90Boone County10-0.2 pts
90Brown County10+0.2 pts
90Piatt County10+0.4 pts
93Jo Daviess County9.9+0.5 pts
93Monroe County9.9+0.4 pts
93Putnam County9.9+0.4 pts
96Cook County9.8+0.6 pts
97Will County9.7+0.4 pts
98McHenry County9.6+0.1 pts
99Kendall County9.5+0.2 pts
100Kane County9.3+0.2 pts
101Lake County9.10 pts
102DuPage County8.9+0.4 pts

Other periods

About this ranking

Percentage of adults who have ever been told by a doctor, nurse or other health professional that they have asthma and say they still have it. 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), current asthma 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), current asthma in adults, crude prevalence (Counties in Illinois by current asthma 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), current asthma in adults, crude prevalence, Counties in Illinois by current asthma 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-asthma-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), current asthma in adults, crude prevalence. Counties in Illinois by current asthma 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-asthma-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), current asthma in adults, crude prevalence, Counties in Illinois by current asthma in adults, local model estimate, 2023 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-asthma-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), current asthma in adults, crude prevalence: Counties in Illinois by current asthma 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-asthma-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), current asthma 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), current asthma in adults, crude prevalence: Counties in Illinois by current asthma 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-asthma-rate-county-estimate/illinois-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-asthma-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), current asthma 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 current asthma in adults, local model estimate using official data, and cite the source.
rank_places {"indicator":"adult_asthma_rate_modelled","level":"province","within":"Illinois","limit":10}
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Questions

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

Alexander County, with 11.7% in 2023, according to the Centers for Disease Control and Prevention.

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

DuPage County, with 8.9% 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), current asthma in adults, crude prevalence. Retrieved 2026-10-12.

Current asthma in adults, local model estimate: other rankings

Counties in Illinois: more rankings