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

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

Clayton County had the highest high blood pressure in adults, local model estimate of 99 counties in 2021, at 37.7%. Johnson County had the lowest, at 23%. The median was 33.7%. Source: the Centers for Disease Control and Prevention.

Highest37.7Clayton County
Lowest23Johnson County
Median33.799 counties

Top 40 counties, 2021

Clayton County: 37.7 %Clayton County37.7Cass County: 37.3 %Cass County37.3Pocahontas County: 37.3 %Pocahontas County37.3Appanoose County: 37.2 %Appanoose County37.2Page County: 37.2 %Page County37.2Adams County: 37 %Adams County37Audubon County: 36.8 %Audubon County36.8Cherokee County: 36.6 %Cherokee County36.6Van Buren County: 36.4 %Van Buren County36.4Fayette County: 36.2 %Fayette County36.2Palo Alto County: 36.2 %Palo Alto County36.2Calhoun County: 35.9 %Calhoun County35.9Ringgold County: 35.9 %Ringgold County35.9Keokuk County: 35.7 %Keokuk County35.7Wayne County: 35.7 %Wayne County35.7Des Moines County: 35.5 %Des Moines County35.5Kossuth County: 35.5 %Kossuth County35.5Lucas County: 35.5 %Lucas County35.5Crawford County: 35.4 %Crawford County35.4Dickinson County: 35.4 %Dickinson County35.4Montgomery County: 35.4 %Montgomery County35.4Adair County: 35.3 %Adair County35.3Humboldt County: 35.3 %Humboldt County35.3Monona County: 35.2 %Monona County35.2Franklin County: 35.1 %Franklin County35.1Chickasaw County: 35 %Chickasaw County35Allamakee County: 34.9 %Allamakee County34.9Greene County: 34.9 %Greene County34.9Jones County: 34.7 %Jones County34.7Lee County: 34.7 %Lee County34.7Butler County: 34.6 %Butler County34.6Fremont County: 34.6 %Fremont County34.6Hardin County: 34.6 %Hardin County34.6Harrison County: 34.6 %Harrison County34.6Osceola County: 34.5 %Osceola County34.5Clarke County: 34.4 %Clarke County34.4Clay County: 34.3 %Clay County34.3Guthrie County: 34.2 %Guthrie County34.2Wright County: 34.2 %Wright County34.2Benton County: 34 %Benton County34
%. 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 (%)
1Clayton County37.7
2Cass County37.3
2Pocahontas County37.3
4Appanoose County37.2
4Page County37.2
6Adams County37
7Audubon County36.8
8Cherokee County36.6
9Van Buren County36.4
10Fayette County36.2
10Palo Alto County36.2
12Calhoun County35.9
12Ringgold County35.9
14Keokuk County35.7
14Wayne County35.7
16Des Moines County35.5
16Kossuth County35.5
16Lucas County35.5
19Crawford County35.4
19Dickinson County35.4
19Montgomery County35.4
22Adair County35.3
22Humboldt County35.3
24Monona County35.2
25Franklin County35.1
26Chickasaw County35
27Allamakee County34.9
27Greene County34.9
29Jones County34.7
29Lee County34.7
31Butler County34.6
31Fremont County34.6
31Hardin County34.6
31Harrison County34.6
35Osceola County34.5
36Clarke County34.4
37Clay County34.3
38Guthrie County34.2
38Wright County34.2
40Benton County34
40Clinton County34
40Emmet County34
40Jackson County34
44Wapello County33.9
45Cerro Gordo County33.8
45Sac County33.8
47Davis County33.7
47Hancock County33.7
47Jefferson County33.7
47Taylor County33.7
47Worth County33.7
52Henry County33.5
53Floyd County33.4
54Ida County33.3
55Carroll County33.2
55Louisa County33.2
55Mitchell County33.2
58Tama County33.1
59Hamilton County33
59Howard County33
59O'Brien County33
59Pottawattamie County33
59Union County33
64Cedar County32.9
64Monroe County32.9
66Delaware County32.5
66Grundy County32.5
68Scott County32.4
69Iowa County32.2
69Jasper County32.2
69Marshall County32.2
69Shelby County32.2
73Plymouth County32.1
73Poweshiek County32.1
75Buchanan County32
75Decatur County32
75Washington County32
75Woodbury County32
79Boone County31.9
80Mills County31.8
81Webster County31.7
82Linn County31.6
83Mahaska County31.5
83Winnebago County31.5
83Winneshiek County31.5
86Muscatine County31.3
87Marion County31.2
88Lyon County30.6
88Madison County30.6
90Black Hawk County30.5
91Bremer County30.3
92Buena Vista County29.8
93Polk County29.3
94Warren County29.2
95Dubuque County28.8
96Sioux County27.5
97Dallas County24.8
98Story County23.1
99Johnson County23

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 Iowa 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 Iowa 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/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 blood pressure in adults, crude prevalence. Counties in Iowa 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/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 blood pressure in adults, crude prevalence, Counties in Iowa 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/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 blood pressure in adults, crude prevalence: Counties in Iowa 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/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 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 Iowa 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/iowa-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/adult-high-blood-pressure-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 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?

Clayton County, with 37.7% in 2021, according to the Centers for Disease Control and Prevention.

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

Johnson County, with 23% 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 Iowa: more rankings