Data / Rankings / High blood pressure in adults, local model estimate / Counties in Maryland

Counties in Maryland by high blood pressure in adults, local model estimate

Worcester County had the highest high blood pressure in adults, local model estimate of 24 counties in 2021, at 42.1%. Montgomery County had the lowest, at 30.1%. The median was 38%. Source: the Centers for Disease Control and Prevention.

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Highest42.1Worcester County
Lowest30.1Montgomery County
Median3824 counties

Map of counties, 2021

Allegany County: 39.6 %Anne Arundel County: 32.9 %Baltimore County: 35.7 %Calvert County: 35.1 %Caroline County: 39.7 %Carroll County: 33.2 %Cecil County: 36.9 %Charles County: 40.6 %Dorchester County: 40.6 %Frederick County: 30.2 %Garrett County: 40.9 %Harford County: 34.9 %Howard County: 30.5 %Kent County: 39.6 %Montgomery County: 30.1 %Prince George's County: 39.6 %Queen Anne's County: 39.5 %St. Mary's County: 35.4 %Somerset County: 40.4 %Talbot County: 39.2 %Washington County: 39 %Wicomico County: 36.6 %Worcester County: 42.1 %Baltimore city: 36.3 %
  • Under 34
  • 34 to 36
  • 36 to 39
  • 39 to 40
  • 40 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh and later releases), high blood pressure in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

Worcester County: 42.1 %Worcester County42.1Garrett County: 40.9 %Garrett County40.9Charles County: 40.6 %Charles County40.6Dorchester County: 40.6 %Dorchester County40.6Somerset County: 40.4 %Somerset County40.4Caroline County: 39.7 %Caroline County39.7Allegany County: 39.6 %Allegany County39.6Kent County: 39.6 %Kent County39.6Prince George's County: 39.6 %Prince George's County39.6Queen Anne's County: 39.5 %Queen Anne's County39.5Talbot County: 39.2 %Talbot County39.2Washington County: 39 %Washington County39Cecil County: 36.9 %Cecil County36.9Wicomico County: 36.6 %Wicomico County36.6Baltimore city: 36.3 %Baltimore city36.3Baltimore County: 35.7 %Baltimore County35.7St. Mary's County: 35.4 %St. Mary's County35.4Calvert County: 35.1 %Calvert County35.1Harford County: 34.9 %Harford County34.9Carroll County: 33.2 %Carroll County33.2Anne Arundel County: 32.9 %Anne Arundel County32.9Howard County: 30.5 %Howard County30.5Frederick County: 30.2 %Frederick County30.2Montgomery County: 30.1 %Montgomery County30.1Worcester County: 42.1 %Worcester County42.1Garrett County: 40.9 %Garrett County40.9Charles County: 40.6 %Charles County40.6Dorchester County: 40.6 %Dorchester County40.6Somerset County: 40.4 %Somerset County40.4Caroline County: 39.7 %Caroline County39.7Allegany County: 39.6 %Allegany County39.6Kent County: 39.6 %Kent County39.6Prince George's County: 39.6 %Prince George's County39.6Queen Anne's County: 39.5 %Queen Anne's County39.5Talbot County: 39.2 %Talbot County39.2Washington County: 39 %Washington County39Cecil County: 36.9 %Cecil County36.9Wicomico County: 36.6 %Wicomico County36.6Baltimore city: 36.3 %Baltimore city36.3Baltimore County: 35.7 %Baltimore County35.7St. Mary's County: 35.4 %St. Mary's County35.4Calvert County: 35.1 %Calvert County35.1Harford County: 34.9 %Harford County34.9Carroll County: 33.2 %Carroll County33.2Anne Arundel County: 32.9 %Anne Arundel County32.9Howard County: 30.5 %Howard County30.5Frederick County: 30.2 %Frederick County30.2Montgomery County: 30.1 %Montgomery County30.1
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh and later releases), high blood pressure in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Worcester County42.1
2Garrett County40.9
3Charles County40.6
3Dorchester County40.6
5Somerset County40.4
6Caroline County39.7
7Allegany County39.6
7Kent County39.6
7Prince George's County39.6
10Queen Anne's County39.5
11Talbot County39.2
12Washington County39
13Cecil County36.9
14Wicomico County36.6
15Baltimore city36.3
16Baltimore County35.7
17St. Mary's County35.4
18Calvert County35.1
19Harford County34.9
20Carroll County33.2
21Anne Arundel County32.9
22Howard County30.5
23Frederick County30.2
24Montgomery County30.1

Other periods

About this ranking

Percentage of adults who have ever been told by a doctor, nurse or other health professional that they have high blood pressure. 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 2021; its eight former counties are not served. The question is asked in odd years only.

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 and later releases), high blood pressure 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 and later releases), high blood pressure in adults, crude prevalence (Counties in Maryland by high blood pressure 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 and later releases), high blood pressure in adults, crude prevalence, Counties in Maryland by high blood pressure 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-high-blood-pressure-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 and later releases), high blood pressure in adults, crude prevalence. Counties in Maryland by high blood pressure 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-high-blood-pressure-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 and later releases), high blood pressure in adults, crude prevalence, Counties in Maryland by high blood pressure in adults, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-high-blood-pressure-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 and later releases), high blood pressure in adults, crude prevalence: Counties in Maryland by high blood pressure 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-high-blood-pressure-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 and later releases), high blood pressure 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 and later releases), high blood pressure in adults, crude prevalence: Counties in Maryland by high blood pressure 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-high-blood-pressure-rate-county-estimate/maryland-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-high-blood-pressure-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 and later releases), high blood pressure 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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Questions

Which county has the highest high blood pressure in adults, local model estimate?

Worcester County, with 42.1% in 2021, according to the Centers for Disease Control and Prevention.

Which county has the lowest high blood pressure in adults, local model estimate?

Montgomery County, with 30.1% 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 and later releases), high blood pressure in adults, crude prevalence. Retrieved 2026-10-12.

High blood pressure in adults, local model estimate: other rankings

Counties in Maryland: more rankings