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

Counties in Colorado by current asthma in adults, local model estimate

Alamosa County had the highest current asthma in adults, local model estimate of 64 counties in 2021, at 11.2%. Pitkin County had the lowest, at 9.3%. The median was 10.2%. Source: the Centers for Disease Control and Prevention.

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Highest11.2Alamosa County
Lowest9.3Pitkin County
Median10.264 counties

Map of counties, 2021

Adams County: 10.7 %Alamosa County: 11.2 %Arapahoe County: 10.5 %Archuleta County: 10.2 %Baca County: 11.1 %Bent County: 10 %Boulder County: 10 %Broomfield County: 9.6 %Chaffee County: 10 %Cheyenne County: 10.2 %Clear Creek County: 9.6 %Conejos County: 10.3 %Costilla County: 10.3 %Crowley County: 9.8 %Custer County: 10 %Delta County: 10.8 %Denver County: 9.7 %Dolores County: 10 %Douglas County: 9.3 %Eagle County: 9.7 %Elbert County: 10 %El Paso County: 10.3 %Fremont County: 10.4 %Garfield County: 10.2 %Gilpin County: 9.9 %Grand County: 10 %Gunnison County: 10.1 %Hinsdale County: 9.8 %Huerfano County: 10.1 %Jackson County: 10.6 %Jefferson County: 9.8 %Kiowa County: 10.7 %Kit Carson County: 10.9 %Lake County: 9.7 %La Plata County: 10.1 %Larimer County: 10.1 %Las Animas County: 10.5 %Lincoln County: 10.2 %Logan County: 10.5 %Mesa County: 11 %Mineral County: 9.8 %Moffat County: 10.8 %Montezuma County: 10.8 %Montrose County: 10.3 %Morgan County: 10.7 %Otero County: 11 %Ouray County: 9.7 %Park County: 10 %Phillips County: 10.6 %Pitkin County: 9.3 %Prowers County: 11 %Pueblo County: 10.8 %Rio Blanco County: 10.8 %Rio Grande County: 10.1 %Routt County: 9.9 %Saguache County: 10.6 %San Juan County: 9.8 %San Miguel County: 9.9 %Sedgwick County: 10.6 %Summit County: 9.7 %Teller County: 10.1 %Washington County: 10.6 %Weld County: 10.7 %Yuma County: 10.5 %
  • Under 9.8
  • 9.8 to 10
  • 10 to 11
  • 11 and over
%, 2021. 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, 2021

Alamosa County: 11.2 %Alamosa County11.2Baca County: 11.1 %Baca County11.1Mesa County: 11 %Mesa County11Otero County: 11 %Otero County11Prowers County: 11 %Prowers County11Kit Carson County: 10.9 %Kit Carson County10.9Delta County: 10.8 %Delta County10.8Moffat County: 10.8 %Moffat County10.8Montezuma County: 10.8 %Montezuma County10.8Pueblo County: 10.8 %Pueblo County10.8Rio Blanco County: 10.8 %Rio Blanco County10.8Adams County: 10.7 %Adams County10.7Kiowa County: 10.7 %Kiowa County10.7Morgan County: 10.7 %Morgan County10.7Weld County: 10.7 %Weld County10.7Jackson County: 10.6 %Jackson County10.6Phillips County: 10.6 %Phillips County10.6Saguache County: 10.6 %Saguache County10.6Sedgwick County: 10.6 %Sedgwick County10.6Washington County: 10.6 %Washington County10.6Arapahoe County: 10.5 %Arapahoe County10.5Las Animas County: 10.5 %Las Animas County10.5Logan County: 10.5 %Logan County10.5Yuma County: 10.5 %Yuma County10.5Fremont County: 10.4 %Fremont County10.4Conejos County: 10.3 %Conejos County10.3Costilla County: 10.3 %Costilla County10.3El Paso County: 10.3 %El Paso County10.3Montrose County: 10.3 %Montrose County10.3Archuleta County: 10.2 %Archuleta County10.2Cheyenne County: 10.2 %Cheyenne County10.2Garfield County: 10.2 %Garfield County10.2Lincoln County: 10.2 %Lincoln County10.2Gunnison County: 10.1 %Gunnison County10.1Huerfano County: 10.1 %Huerfano County10.1La Plata County: 10.1 %La Plata County10.1Larimer County: 10.1 %Larimer County10.1Rio Grande County: 10.1 %Rio Grande County10.1Teller County: 10.1 %Teller County10.1Bent County: 10 %Bent County10Alamosa County: 11.2 %Alamosa County11.2Baca County: 11.1 %Baca County11.1Mesa County: 11 %Mesa County11Otero County: 11 %Otero County11Prowers County: 11 %Prowers County11Kit Carson County: 10.9 %Kit Carson County10.9Delta County: 10.8 %Delta County10.8Moffat County: 10.8 %Moffat County10.8Montezuma County: 10.8 %Montezuma County10.8Pueblo County: 10.8 %Pueblo County10.8Rio Blanco County: 10.8 %Rio Blanco County10.8Adams County: 10.7 %Adams County10.7Kiowa County: 10.7 %Kiowa County10.7Morgan County: 10.7 %Morgan County10.7Weld County: 10.7 %Weld County10.7Jackson County: 10.6 %Jackson County10.6Phillips County: 10.6 %Phillips County10.6Saguache County: 10.6 %Saguache County10.6Sedgwick County: 10.6 %Sedgwick County10.6Washington County: 10.6 %Washington County10.6Arapahoe County: 10.5 %Arapahoe County10.5Las Animas County: 10.5 %Las Animas County10.5Logan County: 10.5 %Logan County10.5Yuma County: 10.5 %Yuma County10.5Fremont County: 10.4 %Fremont County10.4Conejos County: 10.3 %Conejos County10.3Costilla County: 10.3 %Costilla County10.3El Paso County: 10.3 %El Paso County10.3Montrose County: 10.3 %Montrose County10.3Archuleta County: 10.2 %Archuleta County10.2Cheyenne County: 10.2 %Cheyenne County10.2Garfield County: 10.2 %Garfield County10.2Lincoln County: 10.2 %Lincoln County10.2Gunnison County: 10.1 %Gunnison County10.1Huerfano County: 10.1 %Huerfano County10.1La Plata County: 10.1 %La Plata County10.1Larimer County: 10.1 %Larimer County10.1Rio Grande County: 10.1 %Rio Grande County10.1Teller County: 10.1 %Teller County10.1Bent County: 10 %Bent County10
%. 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

RankCounties2021 (%)
1Alamosa County11.2
2Baca County11.1
3Mesa County11
3Otero County11
3Prowers County11
6Kit Carson County10.9
7Delta County10.8
7Moffat County10.8
7Montezuma County10.8
7Pueblo County10.8
7Rio Blanco County10.8
12Adams County10.7
12Kiowa County10.7
12Morgan County10.7
12Weld County10.7
16Jackson County10.6
16Phillips County10.6
16Saguache County10.6
16Sedgwick County10.6
16Washington County10.6
21Arapahoe County10.5
21Las Animas County10.5
21Logan County10.5
21Yuma County10.5
25Fremont County10.4
26Conejos County10.3
26Costilla County10.3
26El Paso County10.3
26Montrose County10.3
30Archuleta County10.2
30Cheyenne County10.2
30Garfield County10.2
30Lincoln County10.2
34Gunnison County10.1
34Huerfano County10.1
34La Plata County10.1
34Larimer County10.1
34Rio Grande County10.1
34Teller County10.1
40Bent County10
40Boulder County10
40Chaffee County10
40Custer County10
40Dolores County10
40Elbert County10
40Grand County10
40Park County10
48Gilpin County9.9
48Routt County9.9
48San Miguel County9.9
51Crowley County9.8
51Hinsdale County9.8
51Jefferson County9.8
51Mineral County9.8
51San Juan County9.8
56Denver County9.7
56Eagle County9.7
56Lake County9.7
56Ouray County9.7
56Summit County9.7
61Broomfield County9.6
61Clear Creek County9.6
63Douglas County9.3
63Pitkin County9.3

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

BibTeX
@misc{centers_counties_in_colorado_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), current asthma in adults, crude prevalence: Counties in Colorado by current asthma 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-asthma-rate-county-estimate/colorado-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), 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 Colorado by current asthma 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-asthma-rate-county-estimate/colorado-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-asthma-rate-county-estimate/colorado-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), 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 Colorado 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":"Colorado","limit":10}
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Questions

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

Alamosa County, with 11.2% in 2021, according to the Centers for Disease Control and Prevention.

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

Pitkin County, with 9.3% 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), current asthma in adults, crude prevalence. Retrieved 2026-10-12.

Current asthma in adults, local model estimate: other rankings

Counties in Colorado: more rankings