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

Counties in South Carolina by high blood pressure in adults, local model estimate

Williamsburg County had the highest high blood pressure in adults, local model estimate of 46 counties in 2021, at 49.7%. Charleston County had the lowest, at 32.2%. The median was 42.3%. Source: the Centers for Disease Control and Prevention.

Highest49.7Williamsburg County
Lowest32.2Charleston County
Median42.346 counties

All counties, 2021

Williamsburg County: 49.7 %Williamsburg County49.7Allendale County: 49 %Allendale County49McCormick County: 48.7 %McCormick County48.7Marion County: 48.3 %Marion County48.3Fairfield County: 48 %Fairfield County48Dillon County: 47.7 %Dillon County47.7Clarendon County: 47.3 %Clarendon County47.3Calhoun County: 47.2 %Calhoun County47.2Marlboro County: 47.1 %Marlboro County47.1Hampton County: 46.9 %Hampton County46.9Orangeburg County: 46.6 %Orangeburg County46.6Lee County: 46.4 %Lee County46.4Colleton County: 45.9 %Colleton County45.9Barnwell County: 45.5 %Barnwell County45.5Darlington County: 45.5 %Darlington County45.5Chesterfield County: 44.9 %Chesterfield County44.9Georgetown County: 44.5 %Georgetown County44.5Bamberg County: 44.3 %Bamberg County44.3Union County: 44.1 %Union County44.1Saluda County: 43.4 %Saluda County43.4Florence County: 43.2 %Florence County43.2Jasper County: 43.2 %Jasper County43.2Abbeville County: 42.5 %Abbeville County42.5Laurens County: 42.1 %Laurens County42.1Greenwood County: 41.9 %Greenwood County41.9Sumter County: 41.9 %Sumter County41.9Aiken County: 41.1 %Aiken County41.1Edgefield County: 40.9 %Edgefield County40.9Chester County: 40.8 %Chester County40.8Oconee County: 40.5 %Oconee County40.5Horry County: 40.1 %Horry County40.1Cherokee County: 39.7 %Cherokee County39.7Lancaster County: 39.3 %Lancaster County39.3Anderson County: 39.2 %Anderson County39.2Newberry County: 39.1 %Newberry County39.1Kershaw County: 37 %Kershaw County37York County: 36.3 %York County36.3Spartanburg County: 35.8 %Spartanburg County35.8Berkeley County: 35.4 %Berkeley County35.4Beaufort County: 35.3 %Beaufort County35.3Dorchester County: 35.2 %Dorchester County35.2Greenville County: 35 %Greenville County35Lexington County: 34.6 %Lexington County34.6Richland County: 34 %Richland County34Pickens County: 33.3 %Pickens County33.3Charleston County: 32.2 %Charleston County32.2
%. 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 (%)
1Williamsburg County49.7
2Allendale County49
3McCormick County48.7
4Marion County48.3
5Fairfield County48
6Dillon County47.7
7Clarendon County47.3
8Calhoun County47.2
9Marlboro County47.1
10Hampton County46.9
11Orangeburg County46.6
12Lee County46.4
13Colleton County45.9
14Barnwell County45.5
14Darlington County45.5
16Chesterfield County44.9
17Georgetown County44.5
18Bamberg County44.3
19Union County44.1
20Saluda County43.4
21Florence County43.2
21Jasper County43.2
23Abbeville County42.5
24Laurens County42.1
25Greenwood County41.9
25Sumter County41.9
27Aiken County41.1
28Edgefield County40.9
29Chester County40.8
30Oconee County40.5
31Horry County40.1
32Cherokee County39.7
33Lancaster County39.3
34Anderson County39.2
35Newberry County39.1
36Kershaw County37
37York County36.3
38Spartanburg County35.8
39Berkeley County35.4
40Beaufort County35.3
41Dorchester County35.2
42Greenville County35
43Lexington County34.6
44Richland County34
45Pickens County33.3
46Charleston County32.2

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 South Carolina 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 South Carolina 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/south-carolina-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 South Carolina 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/south-carolina-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 South Carolina 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/south-carolina-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_south_carolina_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 South Carolina 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/south-carolina-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 South Carolina 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/south-carolina-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-high-blood-pressure-rate-county-estimate/south-carolina-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?

Williamsburg County, with 49.7% in 2021, according to the Centers for Disease Control and Prevention.

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

Charleston County, with 32.2% 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 South Carolina: more rankings