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

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

Baltimore city had the highest current asthma in adults, local model estimate of 24 counties in 2021, at 12.1%. Montgomery County had the lowest, at 8.6%. The median was 10%. Source: the Centers for Disease Control and Prevention.

Keep it in a collection in your library.
Highest12.1Baltimore city
Lowest8.6Montgomery County
Median1024 counties

Map of counties, 2021

Allegany County: 10.2 %Anne Arundel County: 9 %Baltimore County: 9.8 %Calvert County: 9.8 %Caroline County: 10.9 %Carroll County: 9.5 %Cecil County: 10.3 %Charles County: 10 %Dorchester County: 10.7 %Frederick County: 9.4 %Garrett County: 10 %Harford County: 9.9 %Howard County: 8.6 %Kent County: 10 %Montgomery County: 8.6 %Prince George's County: 10.6 %Queen Anne's County: 9.4 %St. Mary's County: 10.1 %Somerset County: 11.4 %Talbot County: 9.5 %Washington County: 10.9 %Wicomico County: 11.2 %Worcester County: 9.8 %Baltimore city: 12.1 %
  • Under 9.5
  • 9.5 to 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.

All counties, 2021

Baltimore city: 12.1 %Baltimore city12.1Somerset County: 11.4 %Somerset County11.4Wicomico County: 11.2 %Wicomico County11.2Caroline County: 10.9 %Caroline County10.9Washington County: 10.9 %Washington County10.9Dorchester County: 10.7 %Dorchester County10.7Prince George's County: 10.6 %Prince George's County10.6Cecil County: 10.3 %Cecil County10.3Allegany County: 10.2 %Allegany County10.2St. Mary's County: 10.1 %St. Mary's County10.1Charles County: 10 %Charles County10Garrett County: 10 %Garrett County10Kent County: 10 %Kent County10Harford County: 9.9 %Harford County9.9Baltimore County: 9.8 %Baltimore County9.8Calvert County: 9.8 %Calvert County9.8Worcester County: 9.8 %Worcester County9.8Carroll County: 9.5 %Carroll County9.5Talbot County: 9.5 %Talbot County9.5Frederick County: 9.4 %Frederick County9.4Queen Anne's County: 9.4 %Queen Anne's County9.4Anne Arundel County: 9 %Anne Arundel County9Howard County: 8.6 %Howard County8.6Montgomery County: 8.6 %Montgomery County8.6Baltimore city: 12.1 %Baltimore city12.1Somerset County: 11.4 %Somerset County11.4Wicomico County: 11.2 %Wicomico County11.2Caroline County: 10.9 %Caroline County10.9Washington County: 10.9 %Washington County10.9Dorchester County: 10.7 %Dorchester County10.7Prince George's County: 10.6 %Prince George's County10.6Cecil County: 10.3 %Cecil County10.3Allegany County: 10.2 %Allegany County10.2St. Mary's County: 10.1 %St. Mary's County10.1Charles County: 10 %Charles County10Garrett County: 10 %Garrett County10Kent County: 10 %Kent County10Harford County: 9.9 %Harford County9.9Baltimore County: 9.8 %Baltimore County9.8Calvert County: 9.8 %Calvert County9.8Worcester County: 9.8 %Worcester County9.8Carroll County: 9.5 %Carroll County9.5Talbot County: 9.5 %Talbot County9.5Frederick County: 9.4 %Frederick County9.4Queen Anne's County: 9.4 %Queen Anne's County9.4Anne Arundel County: 9 %Anne Arundel County9Howard County: 8.6 %Howard County8.6Montgomery County: 8.6 %Montgomery County8.6
%. 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 (%)
1Baltimore city12.1
2Somerset County11.4
3Wicomico County11.2
4Caroline County10.9
4Washington County10.9
6Dorchester County10.7
7Prince George's County10.6
8Cecil County10.3
9Allegany County10.2
10St. Mary's County10.1
11Charles County10
11Garrett County10
11Kent County10
14Harford County9.9
15Baltimore County9.8
15Calvert County9.8
15Worcester County9.8
18Carroll County9.5
18Talbot County9.5
20Frederick County9.4
20Queen Anne's County9.4
22Anne Arundel County9
23Howard County8.6
23Montgomery County8.6

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 Maryland 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 Maryland 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/maryland-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 Maryland 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/maryland-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 Maryland 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/maryland-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_maryland_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 Maryland 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/maryland-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 Maryland 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/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-asthma-rate-county-estimate/maryland-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  -
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Maryland 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":"Maryland","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=adult_asthma_rate_modelled&level=province&within=Maryland&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

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

Baltimore city, with 12.1% in 2021, according to the Centers for Disease Control and Prevention.

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

Montgomery County, with 8.6% 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 Maryland: more rankings