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

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

Capitol Planning Region had the highest current asthma in adults, local model estimate of 9 counties in 2023, at 11.9%. Western Connecticut Planning Region had the lowest, at 9.8%. The median was 11%. Source: the Centers for Disease Control and Prevention.

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Highest11.9Capitol Planning Region
Lowest9.8Western Connecticut Planning Region
Median119 counties

Map of counties, 2023

Capitol Planning Region: 11.9 %Greater Bridgeport Planning Region: 10.5 %Lower Connecticut River Valley Planning Region: 10.7 %Naugatuck Valley Planning Region: 11.1 %Northeastern Connecticut Planning Region: 11.4 %Northwest Hills Planning Region: 11 %South Central Connecticut Planning Region: 10.9 %Southeastern Connecticut Planning Region: 11.7 %Western Connecticut Planning Region: 9.8 %
  • Under 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.

All counties, 2023

Capitol Planning Region: 11.9 %Capitol Planning Region11.9Southeastern Connecticut Planning Region: 11.7 %Southeastern Connecticut Planning…11.7Northeastern Connecticut Planning Region: 11.4 %Northeastern Connecticut Planning…11.4Naugatuck Valley Planning Region: 11.1 %Naugatuck Valley Planning Region11.1Northwest Hills Planning Region: 11 %Northwest Hills Planning Region11South Central Connecticut Planning Region: 10.9 %South Central Connecticut Plannin…10.9Lower Connecticut River Valley Planning Region: 10.7 %Lower Connecticut River Valley Pl…10.7Greater Bridgeport Planning Region: 10.5 %Greater Bridgeport Planning Region10.5Western Connecticut Planning Region: 9.8 %Western Connecticut Planning Regi…9.8Capitol Planning Region: 11.9 %Capitol Planning Region11.9Southeastern Connecticut Planning Region: 11.7 %Southeastern Connecticut Planning Region11.7Northeastern Connecticut Planning Region: 11.4 %Northeastern Connecticut Planning Region11.4Naugatuck Valley Planning Region: 11.1 %Naugatuck Valley Planning Region11.1Northwest Hills Planning Region: 11 %Northwest Hills Planning Region11South Central Connecticut Planning Region: 10.9 %South Central Connecticut Planning Region10.9Lower Connecticut River Valley Planning Region: 10.7 %Lower Connecticut River Valley Planning Region10.7Greater Bridgeport Planning Region: 10.5 %Greater Bridgeport Planning Region10.5Western Connecticut Planning Region: 9.8 %Western Connecticut Planning Region9.8
%. 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
1Capitol Planning Region11.9-1 pts
2Southeastern Connecticut Planning Region11.7-0.3 pts
3Northeastern Connecticut Planning Region11.4-1 pts
4Naugatuck Valley Planning Region11.1-1.3 pts
5Northwest Hills Planning Region11-0.7 pts
6South Central Connecticut Planning Region10.9-1.5 pts
7Lower Connecticut River Valley Planning Region10.7-0.6 pts
8Greater Bridgeport Planning Region10.5-0.7 pts
9Western Connecticut Planning Region9.8-0.6 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 Connecticut 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 Connecticut 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/connecticut-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 Connecticut 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/connecticut-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 Connecticut 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/connecticut-counties (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_connecticut_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 Connecticut 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/connecticut-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 Connecticut 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/connecticut-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-asthma-rate-county-estimate/connecticut-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 Connecticut 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":"Connecticut","limit":10}
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Questions

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

Capitol Planning Region, with 11.9% in 2023, according to the Centers for Disease Control and Prevention.

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

Western Connecticut Planning Region, with 9.8% 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 Connecticut: more rankings