Data / Rankings / Adult obesity rate, local model estimate / Counties in Maryland

Counties in Maryland by adult obesity rate, local model estimate

Somerset County had the highest adult obesity rate, local model estimate of 24 counties in 2021, at 45%. Montgomery County had the lowest, at 24.9%. The median was 36.2%. Source: the Centers for Disease Control and Prevention.

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Highest45Somerset County
Lowest24.9Montgomery County
Median36.224 counties

Map of counties, 2021

Allegany County: 40.8 %Anne Arundel County: 35.9 %Baltimore County: 36.5 %Calvert County: 35.9 %Caroline County: 42.4 %Carroll County: 31.7 %Cecil County: 36.2 %Charles County: 42.3 %Dorchester County: 38.5 %Frederick County: 33.6 %Garrett County: 44.2 %Harford County: 32.5 %Howard County: 28 %Kent County: 33.4 %Montgomery County: 24.9 %Prince George's County: 40.1 %Queen Anne's County: 35.4 %St. Mary's County: 35.7 %Somerset County: 45 %Talbot County: 33.4 %Washington County: 39.6 %Wicomico County: 36.2 %Worcester County: 37.3 %Baltimore city: 36.3 %
  • Under 33
  • 33 to 36
  • 36 to 40
  • 40 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), adult obesity rate, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Somerset County: 45 %Somerset County45Garrett County: 44.2 %Garrett County44.2Caroline County: 42.4 %Caroline County42.4Charles County: 42.3 %Charles County42.3Allegany County: 40.8 %Allegany County40.8Prince George's County: 40.1 %Prince George's County40.1Washington County: 39.6 %Washington County39.6Dorchester County: 38.5 %Dorchester County38.5Worcester County: 37.3 %Worcester County37.3Baltimore County: 36.5 %Baltimore County36.5Baltimore city: 36.3 %Baltimore city36.3Cecil County: 36.2 %Cecil County36.2Wicomico County: 36.2 %Wicomico County36.2Anne Arundel County: 35.9 %Anne Arundel County35.9Calvert County: 35.9 %Calvert County35.9St. Mary's County: 35.7 %St. Mary's County35.7Queen Anne's County: 35.4 %Queen Anne's County35.4Frederick County: 33.6 %Frederick County33.6Kent County: 33.4 %Kent County33.4Talbot County: 33.4 %Talbot County33.4Harford County: 32.5 %Harford County32.5Carroll County: 31.7 %Carroll County31.7Howard County: 28 %Howard County28Montgomery County: 24.9 %Montgomery County24.9Somerset County: 45 %Somerset County45Garrett County: 44.2 %Garrett County44.2Caroline County: 42.4 %Caroline County42.4Charles County: 42.3 %Charles County42.3Allegany County: 40.8 %Allegany County40.8Prince George's County: 40.1 %Prince George's County40.1Washington County: 39.6 %Washington County39.6Dorchester County: 38.5 %Dorchester County38.5Worcester County: 37.3 %Worcester County37.3Baltimore County: 36.5 %Baltimore County36.5Baltimore city: 36.3 %Baltimore city36.3Cecil County: 36.2 %Cecil County36.2Wicomico County: 36.2 %Wicomico County36.2Anne Arundel County: 35.9 %Anne Arundel County35.9Calvert County: 35.9 %Calvert County35.9St. Mary's County: 35.7 %St. Mary's County35.7Queen Anne's County: 35.4 %Queen Anne's County35.4Frederick County: 33.6 %Frederick County33.6Kent County: 33.4 %Kent County33.4Talbot County: 33.4 %Talbot County33.4Harford County: 32.5 %Harford County32.5Carroll County: 31.7 %Carroll County31.7Howard County: 28 %Howard County28Montgomery County: 24.9 %Montgomery County24.9
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), adult obesity rate, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Somerset County45
2Garrett County44.2
3Caroline County42.4
4Charles County42.3
5Allegany County40.8
6Prince George's County40.1
7Washington County39.6
8Dorchester County38.5
9Worcester County37.3
10Baltimore County36.5
11Baltimore city36.3
12Cecil County36.2
12Wicomico County36.2
14Anne Arundel County35.9
14Calvert County35.9
16St. Mary's County35.7
17Queen Anne's County35.4
18Frederick County33.6
19Kent County33.4
19Talbot County33.4
21Harford County32.5
22Carroll County31.7
23Howard County28
24Montgomery County24.9

Other periods

About this ranking

Percentage of adults with a body mass index of 30 or more, calculated from self-reported weight and height. 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. State and national values come from direct BRFSS estimates under adult_obesity_rate.

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), adult obesity rate, 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), adult obesity rate, crude prevalence (Counties in Maryland by adult obesity rate, 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), adult obesity rate, crude prevalence, Counties in Maryland by adult obesity rate, local model estimate, 2021. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence. Counties in Maryland by adult obesity rate, local model estimate, 2021. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence, Counties in Maryland by adult obesity rate, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, crude prevalence: Counties in Maryland by adult obesity rate, 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-obesity-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), adult obesity rate, 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), adult obesity rate, crude prevalence: Counties in Maryland by adult obesity rate, 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-obesity-rate-county-estimate/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-obesity-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), adult obesity rate, 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 adult obesity rate, local model estimate using official data, and cite the source.
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Questions

Which county has the highest adult obesity rate, local model estimate?

Somerset County, with 45% in 2021, according to the Centers for Disease Control and Prevention.

Which county has the lowest adult obesity rate, local model estimate?

Montgomery County, with 24.9% 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), adult obesity rate, crude prevalence. Retrieved 2026-10-12.

Adult obesity rate, local model estimate: other rankings

Counties in Maryland: more rankings