Counties in South Carolina by diagnosed diabetes in adults, local model estimate

Allendale County had the highest diagnosed diabetes in adults, local model estimate of 46 counties in 2022, at 19.9%. Greenville County had the lowest, at 10.1%. The median was 15.1%. Source: the Centers for Disease Control and Prevention.

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Highest19.9Allendale County
Median15.146 counties

Map of counties, 2022

Abbeville County: 15.2 %Aiken County: 13 %Allendale County: 19.9 %Anderson County: 13.2 %Bamberg County: 18 %Barnwell County: 16.8 %Beaufort County: 12.5 %Berkeley County: 11.8 %Calhoun County: 16.6 %Charleston County: 10.6 %Cherokee County: 13.6 %Chester County: 15.1 %Chesterfield County: 15.2 %Clarendon County: 17.6 %Colleton County: 16.9 %Darlington County: 15.2 %Dillon County: 19.4 %Dorchester County: 12.2 %Edgefield County: 15.3 %Fairfield County: 19.6 %Florence County: 14.5 %Georgetown County: 15.4 %Greenville County: 10.1 %Greenwood County: 14.3 %Hampton County: 17.7 %Horry County: 13.9 %Jasper County: 16.3 %Kershaw County: 14 %Lancaster County: 12.7 %Laurens County: 14.7 %Lee County: 19 %Lexington County: 11.8 %McCormick County: 18.2 %Marion County: 19.7 %Marlboro County: 18.7 %Newberry County: 14.8 %Oconee County: 14.3 %Orangeburg County: 18.4 %Pickens County: 10.9 %Richland County: 11.9 %Saluda County: 15.7 %Spartanburg County: 12.5 %Sumter County: 14.5 %Union County: 16.9 %Williamsburg County: 18 %York County: 10.6 %
  • Under 12
  • 12 to 14
  • 14 to 15
  • 15 to 17
  • 17 to 18
  • 18 and over
%, 2022. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Allendale County: 19.9 %Allendale County19.9Marion County: 19.7 %Marion County19.7Fairfield County: 19.6 %Fairfield County19.6Dillon County: 19.4 %Dillon County19.4Lee County: 19 %Lee County19Marlboro County: 18.7 %Marlboro County18.7Orangeburg County: 18.4 %Orangeburg County18.4McCormick County: 18.2 %McCormick County18.2Bamberg County: 18 %Bamberg County18Williamsburg County: 18 %Williamsburg County18Hampton County: 17.7 %Hampton County17.7Clarendon County: 17.6 %Clarendon County17.6Colleton County: 16.9 %Colleton County16.9Union County: 16.9 %Union County16.9Barnwell County: 16.8 %Barnwell County16.8Calhoun County: 16.6 %Calhoun County16.6Jasper County: 16.3 %Jasper County16.3Saluda County: 15.7 %Saluda County15.7Georgetown County: 15.4 %Georgetown County15.4Edgefield County: 15.3 %Edgefield County15.3Abbeville County: 15.2 %Abbeville County15.2Chesterfield County: 15.2 %Chesterfield County15.2Darlington County: 15.2 %Darlington County15.2Chester County: 15.1 %Chester County15.1Newberry County: 14.8 %Newberry County14.8Laurens County: 14.7 %Laurens County14.7Florence County: 14.5 %Florence County14.5Sumter County: 14.5 %Sumter County14.5Greenwood County: 14.3 %Greenwood County14.3Oconee County: 14.3 %Oconee County14.3Kershaw County: 14 %Kershaw County14Horry County: 13.9 %Horry County13.9Cherokee County: 13.6 %Cherokee County13.6Anderson County: 13.2 %Anderson County13.2Aiken County: 13 %Aiken County13Lancaster County: 12.7 %Lancaster County12.7Beaufort County: 12.5 %Beaufort County12.5Spartanburg County: 12.5 %Spartanburg County12.5Dorchester County: 12.2 %Dorchester County12.2Richland County: 11.9 %Richland County11.9Berkeley County: 11.8 %Berkeley County11.8Lexington County: 11.8 %Lexington County11.8Pickens County: 10.9 %Pickens County10.9Charleston County: 10.6 %Charleston County10.6York County: 10.6 %York County10.6Greenville County: 10.1 %Greenville County10.1Allendale County: 19.9 %Allendale County19.9Marion County: 19.7 %Marion County19.7Fairfield County: 19.6 %Fairfield County19.6Dillon County: 19.4 %Dillon County19.4Lee County: 19 %Lee County19Marlboro County: 18.7 %Marlboro County18.7Orangeburg County: 18.4 %Orangeburg County18.4McCormick County: 18.2 %McCormick County18.2Bamberg County: 18 %Bamberg County18Williamsburg County: 18 %Williamsburg County18Hampton County: 17.7 %Hampton County17.7Clarendon County: 17.6 %Clarendon County17.6Colleton County: 16.9 %Colleton County16.9Union County: 16.9 %Union County16.9Barnwell County: 16.8 %Barnwell County16.8Calhoun County: 16.6 %Calhoun County16.6Jasper County: 16.3 %Jasper County16.3Saluda County: 15.7 %Saluda County15.7Georgetown County: 15.4 %Georgetown County15.4Edgefield County: 15.3 %Edgefield County15.3Abbeville County: 15.2 %Abbeville County15.2Chesterfield County: 15.2 %Chesterfield County15.2Darlington County: 15.2 %Darlington County15.2Chester County: 15.1 %Chester County15.1Newberry County: 14.8 %Newberry County14.8Laurens County: 14.7 %Laurens County14.7Florence County: 14.5 %Florence County14.5Sumter County: 14.5 %Sumter County14.5Greenwood County: 14.3 %Greenwood County14.3Oconee County: 14.3 %Oconee County14.3Kershaw County: 14 %Kershaw County14Horry County: 13.9 %Horry County13.9Cherokee County: 13.6 %Cherokee County13.6Anderson County: 13.2 %Anderson County13.2Aiken County: 13 %Aiken County13Lancaster County: 12.7 %Lancaster County12.7Beaufort County: 12.5 %Beaufort County12.5Spartanburg County: 12.5 %Spartanburg County12.5Dorchester County: 12.2 %Dorchester County12.2Richland County: 11.9 %Richland County11.9Berkeley County: 11.8 %Berkeley County11.8Lexington County: 11.8 %Lexington County11.8Pickens County: 10.9 %Pickens County10.9Charleston County: 10.6 %Charleston County10.6York County: 10.6 %York County10.6Greenville County: 10.1 %Greenville County10.1
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh, h3ej-a9ec and later releases), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Allendale County19.9-0.9 pts
2Marion County19.70 pts
3Fairfield County19.6+0.2 pts
4Dillon County19.4+0.5 pts
5Lee County19+1.3 pts
6Marlboro County18.7-0.7 pts
7Orangeburg County18.4-0.5 pts
8McCormick County18.2+0.3 pts
9Bamberg County18+0.5 pts
9Williamsburg County18-2.4 pts
11Hampton County17.7-1.3 pts
12Clarendon County17.6-0.6 pts
13Colleton County16.9-0.1 pts
13Union County16.9-0.2 pts
15Barnwell County16.8-1.8 pts
16Calhoun County16.6-0.3 pts
17Jasper County16.30 pts
18Saluda County15.7-0.9 pts
19Georgetown County15.4+0.1 pts
20Edgefield County15.3-0.4 pts
21Abbeville County15.2-0.3 pts
21Chesterfield County15.2-0.8 pts
21Darlington County15.2-1.1 pts
24Chester County15.1-0.7 pts
25Newberry County14.8-0.1 pts
26Laurens County14.7-0.8 pts
27Florence County14.5-0.9 pts
27Sumter County14.5-1.2 pts
29Greenwood County14.3-1 pts
29Oconee County14.3-0.1 pts
31Kershaw County14+0.2 pts
32Horry County13.9-0.6 pts
33Cherokee County13.6-1.2 pts
34Anderson County13.2+0.2 pts
35Aiken County13-1.1 pts
36Lancaster County12.7-0.2 pts
37Beaufort County12.5+1.2 pts
37Spartanburg County12.5-0.5 pts
39Dorchester County12.2-0.2 pts
40Richland County11.9-0.4 pts
41Berkeley County11.8-0.2 pts
41Lexington County11.80 pts
43Pickens County10.90 pts
44Charleston County10.6-0.3 pts
44York County10.6-0.8 pts
46Greenville County10.1-0.8 pts

Other periods

About this ranking

Percentage of adults who report being told by a doctor or other health professional that they have diabetes, other than diabetes only during pregnancy. 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), diagnosed diabetes 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), diagnosed diabetes in adults, crude prevalence (Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022) [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), diagnosed diabetes in adults, crude prevalence, Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022. Centers for Disease Control and Prevention, 4 Dec. 2025, https://www.cdc.gov/places/. Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/south-carolina-counties?period=2022. 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), diagnosed diabetes in adults, crude prevalence. Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022. Dataset. Accessed October 12, 2026. https://www.cdc.gov/places/. Also distributed by Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/south-carolina-counties?period=2022.

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), diagnosed diabetes in adults, crude prevalence, Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/south-carolina-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_south_carolina_2022,
  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), diagnosed diabetes in adults, crude prevalence: Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022}},
  year = {2025},
  howpublished = {Data set},
  url = {https://www.cdc.gov/places/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/south-carolina-counties?period=2022. 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), diagnosed diabetes 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), diagnosed diabetes in adults, crude prevalence: Counties in South Carolina by diagnosed diabetes in adults, local model estimate, 2022
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-diabetes-rate-county-estimate/south-carolina-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-diabetes-rate-county-estimate/south-carolina-counties?period=2022.
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), diagnosed diabetes 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 diagnosed diabetes in adults, local model estimate using official data, and cite the source.
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Questions

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

Allendale County, with 19.9% in 2022, according to the Centers for Disease Control and Prevention.

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

Greenville County, with 10.1% in 2022.

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), diagnosed diabetes in adults, crude prevalence. Retrieved 2026-10-12.

Diagnosed diabetes in adults, local model estimate: other rankings

Counties in South Carolina: more rankings