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

Counties in Maryland by COPD in adults, local model estimate

Garrett County had the highest COPD in adults, local model estimate of 24 counties in 2021, at 8.8%. Howard County had the lowest, at 3.9%. The median was 6.6%. Source: the Centers for Disease Control and Prevention.

Keep it in a collection in your library.
Highest8.8Garrett County
Lowest3.9Howard County
Median6.624 counties

Map of counties, 2021

Allegany County: 8.2 %Anne Arundel County: 5.2 %Baltimore County: 5.7 %Calvert County: 5.8 %Caroline County: 8.5 %Carroll County: 5.9 %Cecil County: 7.3 %Charles County: 5.5 %Dorchester County: 8.7 %Frederick County: 5.2 %Garrett County: 8.8 %Harford County: 5.9 %Howard County: 3.9 %Kent County: 7.4 %Montgomery County: 4.1 %Prince George's County: 4.9 %Queen Anne's County: 6.5 %St. Mary's County: 5.9 %Somerset County: 8.3 %Talbot County: 7.3 %Washington County: 8.2 %Wicomico County: 7 %Worcester County: 7.7 %Baltimore city: 6.6 %
  • Under 5.4
  • 5.4 to 5.9
  • 5.9 to 7.2
  • 7.2 to 8.2
  • 8.2 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.

All counties, 2021

Garrett County: 8.8 %Garrett County8.8Dorchester County: 8.7 %Dorchester County8.7Caroline County: 8.5 %Caroline County8.5Somerset County: 8.3 %Somerset County8.3Allegany County: 8.2 %Allegany County8.2Washington County: 8.2 %Washington County8.2Worcester County: 7.7 %Worcester County7.7Kent County: 7.4 %Kent County7.4Cecil County: 7.3 %Cecil County7.3Talbot County: 7.3 %Talbot County7.3Wicomico County: 7 %Wicomico County7Baltimore city: 6.6 %Baltimore city6.6Queen Anne's County: 6.5 %Queen Anne's County6.5Carroll County: 5.9 %Carroll County5.9Harford County: 5.9 %Harford County5.9St. Mary's County: 5.9 %St. Mary's County5.9Calvert County: 5.8 %Calvert County5.8Baltimore County: 5.7 %Baltimore County5.7Charles County: 5.5 %Charles County5.5Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.2 %Frederick County5.2Prince George's County: 4.9 %Prince George's County4.9Montgomery County: 4.1 %Montgomery County4.1Howard County: 3.9 %Howard County3.9Garrett County: 8.8 %Garrett County8.8Dorchester County: 8.7 %Dorchester County8.7Caroline County: 8.5 %Caroline County8.5Somerset County: 8.3 %Somerset County8.3Allegany County: 8.2 %Allegany County8.2Washington County: 8.2 %Washington County8.2Worcester County: 7.7 %Worcester County7.7Kent County: 7.4 %Kent County7.4Cecil County: 7.3 %Cecil County7.3Talbot County: 7.3 %Talbot County7.3Wicomico County: 7 %Wicomico County7Baltimore city: 6.6 %Baltimore city6.6Queen Anne's County: 6.5 %Queen Anne's County6.5Carroll County: 5.9 %Carroll County5.9Harford County: 5.9 %Harford County5.9St. Mary's County: 5.9 %St. Mary's County5.9Calvert County: 5.8 %Calvert County5.8Baltimore County: 5.7 %Baltimore County5.7Charles County: 5.5 %Charles County5.5Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.2 %Frederick County5.2Prince George's County: 4.9 %Prince George's County4.9Montgomery County: 4.1 %Montgomery County4.1Howard County: 3.9 %Howard County3.9
%. 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 (%)
1Garrett County8.8
2Dorchester County8.7
3Caroline County8.5
4Somerset County8.3
5Allegany County8.2
5Washington County8.2
7Worcester County7.7
8Kent County7.4
9Cecil County7.3
9Talbot County7.3
11Wicomico County7
12Baltimore city6.6
13Queen Anne's County6.5
14Carroll County5.9
14Harford County5.9
14St. Mary's County5.9
17Calvert County5.8
18Baltimore County5.7
19Charles County5.5
20Anne Arundel County5.2
20Frederick County5.2
22Prince George's County4.9
23Montgomery County4.1
24Howard County3.9

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 Maryland 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 Maryland 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/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), copd in adults, crude prevalence. Counties in Maryland 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/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), copd in adults, crude prevalence, Counties in Maryland 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/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), copd in adults, crude prevalence: Counties in Maryland 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/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), 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 Maryland 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/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-copd-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), 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  -
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 COPD in adults, local model estimate using official data, and cite the source.
rank_places {"indicator":"adult_copd_rate_modelled","level":"province","within":"Maryland","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=adult_copd_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 COPD in adults, local model estimate?

Garrett County, with 8.8% in 2021, according to the Centers for Disease Control and Prevention.

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

Howard County, with 3.9% 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 Maryland: more rankings