Counties in South Carolina by current asthma in adults, local model estimate, 2023

Dillon County had the highest current asthma in adults, local model estimate of 46 counties in 2023, at 11.4%. Beaufort County had the lowest, at 8.5%. The median was 10.1%. Source: the Centers for Disease Control and Prevention.

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Highest11.4Dillon County
Median10.146 counties

Map of counties, 2023

Abbeville County: 10.3 %Aiken County: 9.8 %Allendale County: 11 %Anderson County: 10.2 %Bamberg County: 10.9 %Barnwell County: 11 %Beaufort County: 8.5 %Berkeley County: 9.5 %Calhoun County: 10.1 %Charleston County: 8.8 %Cherokee County: 10.3 %Chester County: 10.7 %Chesterfield County: 10.4 %Clarendon County: 10.7 %Colleton County: 10.8 %Darlington County: 10.7 %Dillon County: 11.4 %Dorchester County: 9.6 %Edgefield County: 9.7 %Fairfield County: 10.7 %Florence County: 10.3 %Georgetown County: 9.3 %Greenville County: 9.4 %Greenwood County: 10.1 %Hampton County: 10.6 %Horry County: 9.2 %Jasper County: 9.7 %Kershaw County: 9.8 %Lancaster County: 9.4 %Laurens County: 10.1 %Lee County: 11 %Lexington County: 9.2 %McCormick County: 9.6 %Marion County: 11.3 %Marlboro County: 11 %Newberry County: 9.8 %Oconee County: 9.8 %Orangeburg County: 11 %Pickens County: 9.7 %Richland County: 9.9 %Saluda County: 9.8 %Spartanburg County: 9.7 %Sumter County: 10.5 %Union County: 10.9 %Williamsburg County: 10.9 %York County: 9.3 %
  • Under 9.4
  • 9.4 to 9.8
  • 9.8 to 10
  • 10 to 11
  • 11 and over
%, 2023. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), current asthma in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Dillon County: 11.4 %Dillon County11.4Marion County: 11.3 %Marion County11.3Allendale County: 11 %Allendale County11Barnwell County: 11 %Barnwell County11Lee County: 11 %Lee County11Marlboro County: 11 %Marlboro County11Orangeburg County: 11 %Orangeburg County11Bamberg County: 10.9 %Bamberg County10.9Union County: 10.9 %Union County10.9Williamsburg County: 10.9 %Williamsburg County10.9Colleton County: 10.8 %Colleton County10.8Chester County: 10.7 %Chester County10.7Clarendon County: 10.7 %Clarendon County10.7Darlington County: 10.7 %Darlington County10.7Fairfield County: 10.7 %Fairfield County10.7Hampton County: 10.6 %Hampton County10.6Sumter County: 10.5 %Sumter County10.5Chesterfield County: 10.4 %Chesterfield County10.4Abbeville County: 10.3 %Abbeville County10.3Cherokee County: 10.3 %Cherokee County10.3Florence County: 10.3 %Florence County10.3Anderson County: 10.2 %Anderson County10.2Calhoun County: 10.1 %Calhoun County10.1Greenwood County: 10.1 %Greenwood County10.1Laurens County: 10.1 %Laurens County10.1Richland County: 9.9 %Richland County9.9Aiken County: 9.8 %Aiken County9.8Kershaw County: 9.8 %Kershaw County9.8Newberry County: 9.8 %Newberry County9.8Oconee County: 9.8 %Oconee County9.8Saluda County: 9.8 %Saluda County9.8Edgefield County: 9.7 %Edgefield County9.7Jasper County: 9.7 %Jasper County9.7Pickens County: 9.7 %Pickens County9.7Spartanburg County: 9.7 %Spartanburg County9.7Dorchester County: 9.6 %Dorchester County9.6McCormick County: 9.6 %McCormick County9.6Berkeley County: 9.5 %Berkeley County9.5Greenville County: 9.4 %Greenville County9.4Lancaster County: 9.4 %Lancaster County9.4Georgetown County: 9.3 %Georgetown County9.3York County: 9.3 %York County9.3Horry County: 9.2 %Horry County9.2Lexington County: 9.2 %Lexington County9.2Charleston County: 8.8 %Charleston County8.8Beaufort County: 8.5 %Beaufort County8.5Dillon County: 11.4 %Dillon County11.4Marion County: 11.3 %Marion County11.3Allendale County: 11 %Allendale County11Barnwell County: 11 %Barnwell County11Lee County: 11 %Lee County11Marlboro County: 11 %Marlboro County11Orangeburg County: 11 %Orangeburg County11Bamberg County: 10.9 %Bamberg County10.9Union County: 10.9 %Union County10.9Williamsburg County: 10.9 %Williamsburg County10.9Colleton County: 10.8 %Colleton County10.8Chester County: 10.7 %Chester County10.7Clarendon County: 10.7 %Clarendon County10.7Darlington County: 10.7 %Darlington County10.7Fairfield County: 10.7 %Fairfield County10.7Hampton County: 10.6 %Hampton County10.6Sumter County: 10.5 %Sumter County10.5Chesterfield County: 10.4 %Chesterfield County10.4Abbeville County: 10.3 %Abbeville County10.3Cherokee County: 10.3 %Cherokee County10.3Florence County: 10.3 %Florence County10.3Anderson County: 10.2 %Anderson County10.2Calhoun County: 10.1 %Calhoun County10.1Greenwood County: 10.1 %Greenwood County10.1Laurens County: 10.1 %Laurens County10.1Richland County: 9.9 %Richland County9.9Aiken County: 9.8 %Aiken County9.8Kershaw County: 9.8 %Kershaw County9.8Newberry County: 9.8 %Newberry County9.8Oconee County: 9.8 %Oconee County9.8Saluda County: 9.8 %Saluda County9.8Edgefield County: 9.7 %Edgefield County9.7Jasper County: 9.7 %Jasper County9.7Pickens County: 9.7 %Pickens County9.7Spartanburg County: 9.7 %Spartanburg County9.7Dorchester County: 9.6 %Dorchester County9.6McCormick County: 9.6 %McCormick County9.6Berkeley County: 9.5 %Berkeley County9.5Greenville County: 9.4 %Greenville County9.4Lancaster County: 9.4 %Lancaster County9.4Georgetown County: 9.3 %Georgetown County9.3York County: 9.3 %York County9.3Horry County: 9.2 %Horry County9.2Lexington County: 9.2 %Lexington County9.2Charleston County: 8.8 %Charleston County8.8Beaufort County: 8.5 %Beaufort County8.5
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), current asthma in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Dillon County11.4-1 pts
2Marion County11.3-0.5 pts
3Allendale County11-0.3 pts
3Barnwell County11-0.1 pts
3Lee County11-0.7 pts
3Marlboro County11-0.3 pts
3Orangeburg County11-0.3 pts
8Bamberg County10.9-0.3 pts
8Union County10.9-0.5 pts
8Williamsburg County10.9-0.2 pts
11Colleton County10.8-0.1 pts
12Chester County10.7-0.2 pts
12Clarendon County10.7-0.1 pts
12Darlington County10.7-0.1 pts
12Fairfield County10.7-0.8 pts
16Hampton County10.6-0.4 pts
17Sumter County10.5+0.2 pts
18Chesterfield County10.4-0.1 pts
19Abbeville County10.3+0.1 pts
19Cherokee County10.3-0.4 pts
19Florence County10.3-0.1 pts
22Anderson County10.20 pts
23Calhoun County10.1-0.5 pts
23Greenwood County10.1-0.5 pts
23Laurens County10.1-0.4 pts
26Richland County9.9-0.8 pts
27Aiken County9.8-0.6 pts
27Kershaw County9.8-0.4 pts
27Newberry County9.8-0.3 pts
27Oconee County9.8+0.2 pts
27Saluda County9.8-0.2 pts
32Edgefield County9.7-1.1 pts
32Jasper County9.7-0.4 pts
32Pickens County9.7-0.8 pts
32Spartanburg County9.7-0.2 pts
36Dorchester County9.6-0.3 pts
36McCormick County9.60 pts
38Berkeley County9.5-0.4 pts
39Greenville County9.4+0.3 pts
39Lancaster County9.4-0.4 pts
41Georgetown County9.3-0.9 pts
41York County9.3-0.7 pts
43Horry County9.2-0.3 pts
43Lexington County9.2-0.3 pts
45Charleston County8.8-0.1 pts
46Beaufort County8.5-0.5 pts

Other periods

About this ranking

Percentage of adults who have ever been told by a doctor, nurse or other health professional that they have asthma and say they still have it. 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), current asthma 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), current asthma in adults, crude prevalence (Counties in South Carolina by current asthma 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), current asthma in adults, crude prevalence, Counties in South Carolina by current asthma 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-asthma-rate-county-estimate/south-carolina-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), current asthma in adults, crude prevalence. Counties in South Carolina by current asthma 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-asthma-rate-county-estimate/south-carolina-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), current asthma in adults, crude prevalence, Counties in South Carolina by current asthma in adults, local model estimate, 2023 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-asthma-rate-county-estimate/south-carolina-counties (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_south_carolina_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), current asthma in adults, crude prevalence: Counties in South Carolina by current asthma 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-asthma-rate-county-estimate/south-carolina-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), current asthma 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), current asthma in adults, crude prevalence: Counties in South Carolina by current asthma 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-asthma-rate-county-estimate/south-carolina-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-asthma-rate-county-estimate/south-carolina-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), current asthma 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 South Carolina by current asthma in adults, local model estimate using official data, and cite the source.
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Questions

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

Dillon County, with 11.4% in 2023, according to the Centers for Disease Control and Prevention.

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

Beaufort County, with 8.5% 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), current asthma in adults, crude prevalence. Retrieved 2026-10-12.

Current asthma in adults, local model estimate: other rankings

Counties in South Carolina: more rankings