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

Counties in Maryland by COPD in adults, local model estimate, 2023

Dorchester County had the highest COPD in adults, local model estimate of 24 counties in 2023, at 9.9%. Howard County had the lowest, at 4%. The median was 7.1%. Source: the Centers for Disease Control and Prevention.

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Highest9.9Dorchester County
Lowest4Howard County
Median7.124 counties

Map of counties, 2023

Allegany County: 9.7 %Anne Arundel County: 5.2 %Baltimore County: 6.5 %Calvert County: 5.9 %Caroline County: 9.5 %Carroll County: 5.9 %Cecil County: 7.7 %Charles County: 5.5 %Dorchester County: 9.9 %Frederick County: 5.1 %Garrett County: 9.3 %Harford County: 6.1 %Howard County: 4 %Kent County: 8.1 %Montgomery County: 4.5 %Prince George's County: 5.5 %Queen Anne's County: 6.8 %St. Mary's County: 5.9 %Somerset County: 8.7 %Talbot County: 8 %Washington County: 8.4 %Wicomico County: 7.4 %Worcester County: 8 %Baltimore city: 7.3 %
  • Under 5.5
  • 5.5 to 6.2
  • 6.2 to 7.6
  • 7.6 to 8.5
  • 8.5 and over
%, 2023. 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, 2023

Dorchester County: 9.9 %Dorchester County9.9Allegany County: 9.7 %Allegany County9.7Caroline County: 9.5 %Caroline County9.5Garrett County: 9.3 %Garrett County9.3Somerset County: 8.7 %Somerset County8.7Washington County: 8.4 %Washington County8.4Kent County: 8.1 %Kent County8.1Talbot County: 8 %Talbot County8Worcester County: 8 %Worcester County8Cecil County: 7.7 %Cecil County7.7Wicomico County: 7.4 %Wicomico County7.4Baltimore city: 7.3 %Baltimore city7.3Queen Anne's County: 6.8 %Queen Anne's County6.8Baltimore County: 6.5 %Baltimore County6.5Harford County: 6.1 %Harford County6.1Calvert County: 5.9 %Calvert County5.9Carroll County: 5.9 %Carroll County5.9St. Mary's County: 5.9 %St. Mary's County5.9Charles County: 5.5 %Charles County5.5Prince George's County: 5.5 %Prince George's County5.5Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.1 %Frederick County5.1Montgomery County: 4.5 %Montgomery County4.5Howard County: 4 %Howard County4Dorchester County: 9.9 %Dorchester County9.9Allegany County: 9.7 %Allegany County9.7Caroline County: 9.5 %Caroline County9.5Garrett County: 9.3 %Garrett County9.3Somerset County: 8.7 %Somerset County8.7Washington County: 8.4 %Washington County8.4Kent County: 8.1 %Kent County8.1Talbot County: 8 %Talbot County8Worcester County: 8 %Worcester County8Cecil County: 7.7 %Cecil County7.7Wicomico County: 7.4 %Wicomico County7.4Baltimore city: 7.3 %Baltimore city7.3Queen Anne's County: 6.8 %Queen Anne's County6.8Baltimore County: 6.5 %Baltimore County6.5Harford County: 6.1 %Harford County6.1Calvert County: 5.9 %Calvert County5.9Carroll County: 5.9 %Carroll County5.9St. Mary's County: 5.9 %St. Mary's County5.9Charles County: 5.5 %Charles County5.5Prince George's County: 5.5 %Prince George's County5.5Anne Arundel County: 5.2 %Anne Arundel County5.2Frederick County: 5.1 %Frederick County5.1Montgomery County: 4.5 %Montgomery County4.5Howard County: 4 %Howard County4
%. 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

RankCounties2023 (%)Change on 2022
1Dorchester County9.9+0.7 pts
2Allegany County9.7+0.6 pts
3Caroline County9.5-0.4 pts
4Garrett County9.3+0.4 pts
5Somerset County8.7-0.8 pts
6Washington County8.4+0.5 pts
7Kent County8.1+0.3 pts
8Talbot County8-0.1 pts
8Worcester County8+0.2 pts
10Cecil County7.7-0.2 pts
11Wicomico County7.4-0.3 pts
12Baltimore city7.3+0.4 pts
13Queen Anne's County6.80 pts
14Baltimore County6.5-0.2 pts
15Harford County6.1+0.5 pts
16Calvert County5.9+0.1 pts
16Carroll County5.9-0.6 pts
16St. Mary's County5.9-0.7 pts
19Charles County5.5-0.6 pts
19Prince George's County5.5+0.2 pts
21Anne Arundel County5.2+0.3 pts
22Frederick County5.1-1 pts
23Montgomery County4.5+0.6 pts
24Howard County4+0.1 pts

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, 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), copd in adults, crude prevalence, Counties in Maryland by COPD 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-copd-rate-county-estimate/maryland-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), copd in adults, crude prevalence. Counties in Maryland by COPD 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-copd-rate-county-estimate/maryland-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), copd in adults, crude prevalence, Counties in Maryland by COPD in adults, local model estimate, 2023 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-copd-rate-county-estimate/maryland-counties (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_maryland_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), copd in adults, crude prevalence: Counties in Maryland by COPD 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-copd-rate-county-estimate/maryland-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), 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, 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-copd-rate-county-estimate/maryland-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-copd-rate-county-estimate/maryland-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), 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  -
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Rank Counties in Maryland by COPD in adults, local model estimate using official data, and cite the source.
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Questions

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

Dorchester County, with 9.9% in 2023, according to the Centers for Disease Control and Prevention.

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

Howard County, with 4% 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), copd in adults, crude prevalence. Retrieved 2026-10-12.

COPD in adults, local model estimate: other rankings

Counties in Maryland: more rankings