Data / Rankings / High cholesterol in screened adults, local model estimate / Counties in Iowa

Counties in Iowa by high cholesterol in screened adults, local model estimate

Clayton County had the highest high cholesterol in screened adults, local model estimate of 99 counties in 2021, at 39.2%. Johnson County had the lowest, at 26.6%. The median was 36.3%. Source: the Centers for Disease Control and Prevention.

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Highest39.2Clayton County
Lowest26.6Johnson County
Median36.399 counties

Map of counties, 2021

Adair County: 36.5 %Adams County: 38 %Allamakee County: 38.5 %Appanoose County: 38.2 %Audubon County: 38.1 %Benton County: 35.7 %Black Hawk County: 34.1 %Boone County: 35.4 %Bremer County: 32.6 %Buchanan County: 35.5 %Buena Vista County: 38.7 %Butler County: 37.3 %Calhoun County: 36.3 %Carroll County: 36.1 %Cass County: 36.6 %Cedar County: 36.3 %Cerro Gordo County: 37.6 %Cherokee County: 37.2 %Chickasaw County: 37.2 %Clarke County: 36.1 %Clay County: 36.8 %Clayton County: 39.2 %Clinton County: 35.8 %Crawford County: 36.4 %Dallas County: 31.4 %Davis County: 37.6 %Decatur County: 35.6 %Delaware County: 36.7 %Des Moines County: 35.3 %Dickinson County: 37.3 %Dubuque County: 34.3 %Emmet County: 37.1 %Fayette County: 37 %Floyd County: 34.3 %Franklin County: 35.9 %Fremont County: 38 %Greene County: 37.9 %Grundy County: 35 %Guthrie County: 36.8 %Hamilton County: 35.8 %Hancock County: 37.8 %Hardin County: 37.6 %Harrison County: 37.2 %Henry County: 35.5 %Howard County: 35.3 %Humboldt County: 37.6 %Ida County: 36.9 %Iowa County: 35 %Jackson County: 36.8 %Jasper County: 36.2 %Jefferson County: 36.2 %Johnson County: 26.6 %Jones County: 36.3 %Keokuk County: 36.3 %Kossuth County: 37.6 %Lee County: 37.3 %Linn County: 33.5 %Louisa County: 36.3 %Lucas County: 37.4 %Lyon County: 33.7 %Madison County: 33.5 %Mahaska County: 34.8 %Marion County: 36 %Marshall County: 36.7 %Mills County: 36.6 %Mitchell County: 36.8 %Monona County: 37.3 %Monroe County: 35.3 %Montgomery County: 37.3 %Muscatine County: 32.9 %O'Brien County: 35.9 %Osceola County: 36.8 %Page County: 38.6 %Palo Alto County: 36.9 %Plymouth County: 36.5 %Pocahontas County: 39 %Polk County: 33.7 %Pottawattamie County: 35.1 %Poweshiek County: 34.9 %Ringgold County: 37.6 %Sac County: 37.1 %Scott County: 34.5 %Shelby County: 36.8 %Sioux County: 31.8 %Story County: 27.4 %Tama County: 37 %Taylor County: 36.2 %Union County: 35.4 %Van Buren County: 37.7 %Wapello County: 36.1 %Warren County: 33.7 %Washington County: 35.4 %Wayne County: 37.4 %Webster County: 33.8 %Winnebago County: 35.6 %Winneshiek County: 34.4 %Woodbury County: 37.4 %Worth County: 36.9 %Wright County: 36.3 %
  • Under 35
  • 35 to 36
  • 36 to 37
  • 37 to 38
  • 38 and over
%, 2021. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh and later releases), high cholesterol in screened adults, crude prevalence. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Clayton County: 39.2 %Clayton County39.2Pocahontas County: 39 %Pocahontas County39Buena Vista County: 38.7 %Buena Vista County38.7Page County: 38.6 %Page County38.6Allamakee County: 38.5 %Allamakee County38.5Appanoose County: 38.2 %Appanoose County38.2Audubon County: 38.1 %Audubon County38.1Adams County: 38 %Adams County38Fremont County: 38 %Fremont County38Greene County: 37.9 %Greene County37.9Hancock County: 37.8 %Hancock County37.8Van Buren County: 37.7 %Van Buren County37.7Cerro Gordo County: 37.6 %Cerro Gordo County37.6Davis County: 37.6 %Davis County37.6Hardin County: 37.6 %Hardin County37.6Humboldt County: 37.6 %Humboldt County37.6Kossuth County: 37.6 %Kossuth County37.6Ringgold County: 37.6 %Ringgold County37.6Lucas County: 37.4 %Lucas County37.4Wayne County: 37.4 %Wayne County37.4Woodbury County: 37.4 %Woodbury County37.4Butler County: 37.3 %Butler County37.3Dickinson County: 37.3 %Dickinson County37.3Lee County: 37.3 %Lee County37.3Monona County: 37.3 %Monona County37.3Montgomery County: 37.3 %Montgomery County37.3Cherokee County: 37.2 %Cherokee County37.2Chickasaw County: 37.2 %Chickasaw County37.2Harrison County: 37.2 %Harrison County37.2Emmet County: 37.1 %Emmet County37.1Sac County: 37.1 %Sac County37.1Fayette County: 37 %Fayette County37Tama County: 37 %Tama County37Ida County: 36.9 %Ida County36.9Palo Alto County: 36.9 %Palo Alto County36.9Worth County: 36.9 %Worth County36.9Clay County: 36.8 %Clay County36.8Guthrie County: 36.8 %Guthrie County36.8Jackson County: 36.8 %Jackson County36.8Mitchell County: 36.8 %Mitchell County36.8Clayton County: 39.2 %Clayton County39.2Pocahontas County: 39 %Pocahontas County39Buena Vista County: 38.7 %Buena Vista County38.7Page County: 38.6 %Page County38.6Allamakee County: 38.5 %Allamakee County38.5Appanoose County: 38.2 %Appanoose County38.2Audubon County: 38.1 %Audubon County38.1Adams County: 38 %Adams County38Fremont County: 38 %Fremont County38Greene County: 37.9 %Greene County37.9Hancock County: 37.8 %Hancock County37.8Van Buren County: 37.7 %Van Buren County37.7Cerro Gordo County: 37.6 %Cerro Gordo County37.6Davis County: 37.6 %Davis County37.6Hardin County: 37.6 %Hardin County37.6Humboldt County: 37.6 %Humboldt County37.6Kossuth County: 37.6 %Kossuth County37.6Ringgold County: 37.6 %Ringgold County37.6Lucas County: 37.4 %Lucas County37.4Wayne County: 37.4 %Wayne County37.4Woodbury County: 37.4 %Woodbury County37.4Butler County: 37.3 %Butler County37.3Dickinson County: 37.3 %Dickinson County37.3Lee County: 37.3 %Lee County37.3Monona County: 37.3 %Monona County37.3Montgomery County: 37.3 %Montgomery County37.3Cherokee County: 37.2 %Cherokee County37.2Chickasaw County: 37.2 %Chickasaw County37.2Harrison County: 37.2 %Harrison County37.2Emmet County: 37.1 %Emmet County37.1Sac County: 37.1 %Sac County37.1Fayette County: 37 %Fayette County37Tama County: 37 %Tama County37Ida County: 36.9 %Ida County36.9Palo Alto County: 36.9 %Palo Alto County36.9Worth County: 36.9 %Worth County36.9Clay County: 36.8 %Clay County36.8Guthrie County: 36.8 %Guthrie County36.8Jackson County: 36.8 %Jackson County36.8Mitchell County: 36.8 %Mitchell County36.8
%. Source: CDC, PLACES: Local Data for Better Health, County Data (swc5-untb, fu4u-a9bh and later releases), high cholesterol in screened adults, crude prevalence. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Clayton County39.2
2Pocahontas County39
3Buena Vista County38.7
4Page County38.6
5Allamakee County38.5
6Appanoose County38.2
7Audubon County38.1
8Adams County38
8Fremont County38
10Greene County37.9
11Hancock County37.8
12Van Buren County37.7
13Cerro Gordo County37.6
13Davis County37.6
13Hardin County37.6
13Humboldt County37.6
13Kossuth County37.6
13Ringgold County37.6
19Lucas County37.4
19Wayne County37.4
19Woodbury County37.4
22Butler County37.3
22Dickinson County37.3
22Lee County37.3
22Monona County37.3
22Montgomery County37.3
27Cherokee County37.2
27Chickasaw County37.2
27Harrison County37.2
30Emmet County37.1
30Sac County37.1
32Fayette County37
32Tama County37
34Ida County36.9
34Palo Alto County36.9
34Worth County36.9
37Clay County36.8
37Guthrie County36.8
37Jackson County36.8
37Mitchell County36.8
37Osceola County36.8
37Shelby County36.8
43Delaware County36.7
43Marshall County36.7
45Cass County36.6
45Mills County36.6
47Adair County36.5
47Plymouth County36.5
49Crawford County36.4
50Calhoun County36.3
50Cedar County36.3
50Jones County36.3
50Keokuk County36.3
50Louisa County36.3
50Wright County36.3
56Jasper County36.2
56Jefferson County36.2
56Taylor County36.2
59Carroll County36.1
59Clarke County36.1
59Wapello County36.1
62Marion County36
63Franklin County35.9
63O'Brien County35.9
65Clinton County35.8
65Hamilton County35.8
67Benton County35.7
68Decatur County35.6
68Winnebago County35.6
70Buchanan County35.5
70Henry County35.5
72Boone County35.4
72Union County35.4
72Washington County35.4
75Des Moines County35.3
75Howard County35.3
75Monroe County35.3
78Pottawattamie County35.1
79Grundy County35
79Iowa County35
81Poweshiek County34.9
82Mahaska County34.8
83Scott County34.5
84Winneshiek County34.4
85Dubuque County34.3
85Floyd County34.3
87Black Hawk County34.1
88Webster County33.8
89Lyon County33.7
89Polk County33.7
89Warren County33.7
92Linn County33.5
92Madison County33.5
94Muscatine County32.9
95Bremer County32.6
96Sioux County31.8
97Dallas County31.4
98Story County27.4
99Johnson County26.6

Other periods

About this ranking

Percentage of adults who have ever had their cholesterol checked and were told by a doctor, nurse or other health professional that it was high. 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 cholesterol in screened 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 cholesterol in screened adults, crude prevalence (Counties in Iowa by high cholesterol in screened 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 cholesterol in screened adults, crude prevalence, Counties in Iowa by high cholesterol in screened 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-cholesterol-rate-county-estimate/iowa-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 cholesterol in screened adults, crude prevalence. Counties in Iowa by high cholesterol in screened 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-cholesterol-rate-county-estimate/iowa-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 cholesterol in screened adults, crude prevalence, Counties in Iowa by high cholesterol in screened adults, local model estimate, 2021 [Dataset]. Available at: https://www.cdc.gov/places/, via Invokely: https://invokely.ai/rankings/adult-high-cholesterol-rate-county-estimate/iowa-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{centers_counties_in_iowa_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 cholesterol in screened adults, crude prevalence: Counties in Iowa by high cholesterol in screened 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-cholesterol-rate-county-estimate/iowa-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 cholesterol in screened 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 cholesterol in screened adults, crude prevalence: Counties in Iowa by high cholesterol in screened 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-cholesterol-rate-county-estimate/iowa-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-high-cholesterol-rate-county-estimate/iowa-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 cholesterol in screened 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 Iowa by high cholesterol in screened adults, local model estimate using official data, and cite the source.
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Questions

Which county has the highest high cholesterol in screened adults, local model estimate?

Clayton County, with 39.2% in 2021, according to the Centers for Disease Control and Prevention.

Which county has the lowest high cholesterol in screened adults, local model estimate?

Johnson County, with 26.6% 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 cholesterol in screened adults, crude prevalence. Retrieved 2026-10-12.

High cholesterol in screened adults, local model estimate: other rankings

Counties in Iowa: more rankings