States › Iowa

State

Iowa

99 counties or equivalents, 927 places and 946 ZIP Codes with PLACES estimates; 3,207,004 residents.

Counties
Largest places
State figures are site aggregates: population-weighted county estimates, no interval

Iowa within the United States. Boundaries: US Census Bureau.

These are model-based estimates, not measurements. CDC PLACES applies a statistical model to national survey responses and Census population data to estimate what share of an area's adults report each condition or behaviour. CDC: "We do not produce estimates for individuals; only aggregated results for counties, places, census tracts, or ZCTAs."

CDC on comparisons: "It is not adequate to simply compare point estimates. The confidence intervals should also be considered, and some are very broad." This site says higher or lower only when two 95% confidence intervals do not overlap, and similar when they do. CDC also advises that the data "should not be used for ranking the overall health of any county, place, census tract, or ZCTA" and that the model "cannot detect effects due to local interventions".

Source: CDC PLACES 2025 release, data updated 4 Dec 2025. What PLACES is · Reading the intervals · Methodology. Not medical advice.

37.7%obesity, adults (site aggregate)counties 30.4%–44.1%above US interval 32.4–33.1

11.2%diabetes, adults (site aggregate)counties 8.1%–15.4%below US interval 11.8–12.2

33.9%high blood pressure, adults (site aggregate)counties 26.4%–43.3%below US interval 34.0–34.7

17.8%fair or poor health, adults (site aggregate)counties 13.1%–23.8%below US interval 18.9–19.5

Iowa has 99 counties or equivalents, 927 places and 946 ZIP Code Tabulation Areas with PLACES estimates, covering 3,207,004 residents (2,476,882 adults).

PLACES does not publish state totals. The state figures here are population-weighted county estimates computed by this site, following CDC's published method for aggregating areas, and carry no interval. For the 2025 release that gives obesity at 37.7% (site aggregate) (age-adjusted 38.2%), above the national interval around 32.8%; county estimates range from 30.4% to 44.1%.

Diagnosed diabetes is 11.2% (site aggregate) by the same method (national 12.0%) and 7.3% (site aggregate) of adults aged 18–64 are estimated to lack health insurance (national 11.0%).

Report card: 40 measures by CDC category

Crude prevalence is the estimated share of all adults. Age-adjusted prevalence is standardised to the 2000 US standard population so that areas with different age structures can be compared. CDC: "Age-adjusted estimates are only available at the county and place-level."

estimate with 95% intervalUS estimate

Health outcomes (12)vs the US interval: 6 above · 4 below · 2 within

MeasureEstimate and 95% intervalValueFlagsRelease

All teeth lost among adults aged ≥65 yearsBRFSS 2022 · Adults aged 65 years and older11.6%11.8%US ↓US ↓2025

Arthritis among adultsBRFSS 202327.0%23.5%US ↑US ↑2025

Cancer (non-skin) or melanoma among adultsBRFSS 20238.7%7.2%US ↑US ↑2025

Chronic obstructive pulmonary disease among adultsBRFSS 20236.9%6.0%US ↑US ↑2025

Coronary heart disease among adultsBRFSS 20236.6%5.4%US ↑US ≈2025

Current asthma among adultsBRFSS 20239.9%10.0%US ≈US ≈2025

Depression among adultsBRFSS 202320.7%21.5%US ↑US ↑2025

Diagnosed diabetes among adultsBRFSS 202311.2%9.7%US ↓US ↓2025

High blood pressure among adultsBRFSS 202333.9%30.5%US ↓US ≈2025

High cholesterol among adults who have ever been screenedBRFSS 202335.3%30.6%US ↓US ↓2025

Obesity among adultsBRFSS 202337.7%38.2%US ↑US ↑2025

Stroke among adultsBRFSS 20233.3%2.8%US ≈US ≈2025

Prevention (7)vs the US interval: 3 above · 2 below · 2 within

MeasureEstimate and 95% intervalValueFlagsRelease

Cholesterol screening among adultsBRFSS 202384.1%82.6%US ↓US ↓2025

Colorectal cancer screening among adults aged 45–75 yearsBRFSS 2022 · Adults aged 45–75 years66.6%61.0%US ≈US ↑2025

Current lack of health insurance among adults aged 18-64 yearsBRFSS 2023 · Adults aged 18–64 years7.3%7.6%US ↓US ↓2025

Mammography use among women aged 50-74 yearsBRFSS 2022 · Women aged 50–74 years78.7%78.1%US ↑US ↑2025

Taking medicine to control high blood pressure among adults with high blood pressureBRFSS 202377.8%58.9%US ↑US ↑2025

Visited dentist or dental clinic in the past year among adultsBRFSS 202266.8%66.0%US ↑US ↑2025

Visits to doctor for routine checkup within the past year among adultsBRFSS 202377.5%75.6%US ≈US ≈2025

Health risk behaviors (4)vs the US interval: 2 above · 1 below · 1 within

MeasureEstimate and 95% intervalValueFlagsRelease

Binge drinking among adultsBRFSS 202320.5%22.3%US ↑US ↑2025

Current cigarette smoking among adultsBRFSS 202314.5%15.0%US ↑US ↑2025

No leisure-time physical activity among adultsBRFSS 202324.8%23.9%US ≈US ≈2025

Short sleep duration among adultsBRFSS 202232.5%33.6%US ↓US ↓2025

Disability (7)vs the US interval: 1 above · 5 below · 1 within

MeasureEstimate and 95% intervalValueFlagsRelease

Any disability among adultsBRFSS 202328.1%26.5%US ↓US ↓2025

Cognitive disability among adultsBRFSS 202313.5%14.0%US ≈US ≈2025

Hearing disability among adultsBRFSS 20237.4%6.4%US ↑US ↑2025

Independent living disability among adultsBRFSS 20237.4%7.2%US ↓US ↓2025

Mobility disability among adultsBRFSS 202312.7%10.9%US ↓US ↓2025

Self-care disability among adultsBRFSS 20233.4%3.1%US ↓US ↓2025

Vision disability among adultsBRFSS 20234.3%4.0%US ↓US ↓2025

Health status (3)vs the US interval: 1 above · 1 below · 1 within

MeasureEstimate and 95% intervalValueFlagsRelease

Fair or poor self-rated health status among adultsBRFSS 202317.8%17.0%US ↓US ↓2025

Frequent mental distress among adultsBRFSS 202316.4%17.3%US ↑US ↑2025

Frequent physical distress among adultsBRFSS 202312.7%12.0%US ≈US ≈2025

Health-related social needs (7)vs the US interval: 0 above · 5 below · 2 within

MeasureEstimate and 95% intervalValueFlagsRelease

Food insecurity in the past 12 months among adultsBRFSS 202312.0%12.7%US ↓US ↓2025

Housing insecurity in the past 12 months among adultsBRFSS 20239.4%10.4%US ↓US ↓2025

Lack of reliable transportation in the past 12 months among adultsBRFSS 20236.8%7.2%US ↓US ↓2025

Lack of social and emotional support among adultsBRFSS 202323.3%24.0%US ≈US ≈2025

Loneliness among adultsBRFSS 202332.3%33.1%US ≈US ≈2025

Received food stamps in the past 12 months among adultsBRFSS 202310.0%10.6%US ↓US ↓2025

Utility services shut-off threat in the past 12 months among adultsBRFSS 20236.4%7.1%US ↓US ↓2025

State figures are population-weighted county estimates computed by this site and carry no interval, so the dot is a point and the US flag says whether the state figure falls above, below or within CDC's national 95% interval. Each measure links to its national and state tables.

Counties in Iowa

Order counties bycrude prevalence, highest point estimate first

Ordered by point estimate; intervals overlap for most neighbouring rows, so the order is not a ranking. The flag says whether each row's interval lies above, below or in line with the Iowa figure, which is a population-weighted county estimate computed by this site and carries no interval.

Counties	Population	Estimate	95% interval	vs the Iowa figure
Marshall County	40,014	44.1%	38.0–50.6	above
Appanoose County	12,119	43.4%	35.5–51.7	in line
Boone County	26,590	43.4%	35.5–51.1	in line
Iowa County	16,381	43.4%	35.6–51.4	in line
Clarke County	9,588	43.1%	35.2–51.1	in line
Page County	15,014	42.9%	35.1–51.2	in line
Ringgold County	4,642	42.7%	33.9–51.6	in line
Crawford County	16,013	42.6%	35.6–50.3	in line
Emmet County	9,229	42.5%	34.2–50.8	in line
Allamakee County	14,074	42.3%	34.4–50.2	in line
Hancock County	10,615	42.2%	34.0–50.7	in line
Lyon County	12,324	42.2%	37.8–47.7	above
Monona County	8,493	42.2%	34.5–50.6	in line
Wapello County	35,166	41.7%	35.2–48.5	in line
Humboldt County	9,500	41.4%	33.1–50.0	in line
Keokuk County	9,914	41.4%	33.4–49.7	in line
Muscatine County	42,218	41.4%	34.5–48.1	in line
Sac County	9,686	41.3%	32.7–50.1	in line
Webster County	36,485	41.2%	34.5–48.0	in line
Clayton County	16,969	41.0%	33.3–48.9	in line
Ida County	6,833	41.0%	32.2–49.5	in line
Benton County	25,796	40.8%	32.4–49.3	in line
Cedar County	18,302	40.8%	33.4–48.7	in line
Cass County	13,130	40.7%	32.8–48.8	in line
Franklin County	9,875	40.7%	32.7–49.1	in line
Wright County	12,656	40.7%	33.0–48.5	in line
Cherokee County	11,605	40.6%	32.9–48.7	in line
Scott County	174,270	40.6%	35.7–45.6	in line
Wayne County	6,557	40.6%	32.4–49.1	in line
Poweshiek County	18,453	40.5%	33.1–48.5	in line
Worth County	7,297	40.5%	32.2–49.5	in line
Black Hawk County	130,471	40.4%	35.9–44.9	in line
Jackson County	19,342	40.3%	32.0–49.0	in line
Louisa County	10,513	40.2%	32.3–48.5	in line
Tama County	16,833	40.2%	32.0–49.1	in line
Cerro Gordo County	42,406	40.1%	33.7–46.9	in line
Mitchell County	10,518	40.1%	32.2–48.3	in line
Palo Alto County	8,810	40.0%	32.4–48.4	in line
Adair County	7,389	39.9%	31.2–48.7	in line
Fremont County	6,458	39.9%	31.9–48.2	in line
Calhoun County	9,763	39.8%	31.4–48.1	in line
Floyd County	15,326	39.8%	32.2–47.7	in line
Lucas County	8,747	39.8%	31.7–48.3	in line
Carroll County	20,522	39.7%	31.9–47.8	in line
Delaware County	17,600	39.7%	31.6–48.4	in line
Jones County	20,900	39.7%	31.5–48.0	in line
Taylor County	5,924	39.7%	31.8–48.4	in line
Decatur County	7,665	39.6%	31.4–47.7	in line
Jefferson County	15,440	39.6%	32.5–47.1	in line
Montgomery County	10,139	39.5%	31.5–47.9	in line
Osceola County	5,978	39.5%	31.2–48.9	in line
Van Buren County	7,266	39.5%	31.4–48.2	in line
Chickasaw County	11,658	39.4%	32.1–47.2	in line
Marion County	33,770	39.4%	33.0–46.2	in line
Plymouth County	25,722	39.4%	31.6–47.5	in line
Butler County	14,172	39.3%	31.2–47.3	in line
Clinton County	46,158	39.3%	32.4–46.4	in line
Mills County	14,633	39.2%	31.3–47.1	in line
Adams County	3,544	39.1%	30.5–48.0	in line
Pottawattamie County	93,179	39.1%	34.0–44.7	in line
Woodbury County	105,951	39.1%	34.3–44.2	in line
Hardin County	16,463	38.9%	31.3–46.4	in line
Henry County	19,547	38.8%	32.1–46.2	in line
O'Brien County	14,012	38.8%	31.0–46.3	in line
Warren County	55,205	38.7%	32.3–45.8	in line
Mahaska County	21,874	38.6%	31.1–46.1	in line
Washington County	22,560	38.6%	31.2–46.0	in line
Fayette County	19,210	38.5%	31.4–45.7	in line
Winnebago County	10,571	38.4%	30.3–46.6	in line
Jasper County	37,919	38.3%	31.4–45.5	in line
Kossuth County	14,396	38.2%	30.7–46.2	in line
Monroe County	7,504	38.2%	29.9–47.1	in line
Buena Vista County	20,567	38.1%	31.2–45.2	in line
Howard County	9,376	38.0%	30.3–46.3	in line
Shelby County	11,806	37.8%	30.0–45.9	in line
Audubon County	5,534	37.6%	29.3–45.6	in line
Bremer County	25,307	37.6%	30.2–44.9	in line
Buchanan County	20,691	37.6%	30.1–46.0	in line
Lee County	32,565	37.6%	30.9–44.9	in line
Davis County	9,169	37.5%	29.4–45.7	in line
Grundy County	12,384	37.5%	29.8–45.4	in line
Dickinson County	18,056	37.2%	29.4–45.6	in line
Guthrie County	10,722	37.2%	29.6–45.2	in line
Madison County	16,971	37.2%	30.0–45.1	in line
Union County	11,906	37.2%	28.9–45.2	in line
Polk County	505,255	37.0%	33.6–40.6	in line
Hamilton County	14,729	36.5%	29.1–44.3	in line
Pocahontas County	6,976	36.2%	28.3–44.7	in line
Greene County	8,584	35.8%	27.9–44.6	in line
Linn County	228,972	35.4%	31.0–40.2	in line
Clay County	16,511	35.2%	27.9–43.1	in line
Harrison County	14,670	35.2%	28.2–42.5	in line
Winneshiek County	19,815	34.7%	27.8–41.9	in line
Des Moines County	38,253	34.6%	29.1–40.5	in line
Dubuque County	98,887	34.3%	28.3–40.5	in line
Sioux County	36,246	33.0%	26.7–39.5	in line
Dallas County	111,092	32.8%	27.1–38.8	in line
Story County	98,566	30.8%	25.6–36.5	below
Johnson County	157,528	30.4%	26.4–35.0	below

Largest places in Iowa

Des Moines 214,133
Cedar Rapids 137,710
Davenport 101,724
Sioux City 85,797
Iowa City 74,828
West Des Moines 68,723
Ankeny 67,887
Waterloo 67,314
Ames 66,427
Council Bluffs 62,799
Dubuque 59,667
Urbandale 45,580
Marion 41,535
Cedar Falls 40,713
Bettendorf 39,102
Marshalltown 27,591
Mason City 27,338
Ottumwa 25,529
Fort Dodge 24,871
Clinton 24,469
Johnston 24,064
Burlington 23,982
Waukee 23,940
Muscatine 23,797
Coralville 22,318

The 25 most populous places; every county page lists all of its places and ZIP Codes.

Measures

State figures are population-weighted county estimates computed by this site and carry no interval; the word says whether each falls above, below or within CDC's national interval.

Health outcomes

All Teeth Lost 11.6% (site aggregate) · US 12.2% · below US interval
Arthritis 27.0% (site aggregate) · US 25.4% · above US interval
Cancer (non-skin) or Melanoma 8.7% (site aggregate) · US 7.9% · above US interval
COPD 6.9% (site aggregate) · US 6.2% · above US interval
Coronary Heart Disease 6.6% (site aggregate) · US 6.4% · above US interval
Current Asthma 9.9% (site aggregate) · US 9.8% · within US interval
Depression 20.7% (site aggregate) · US 20.2% · above US interval
Diabetes 11.2% (site aggregate) · US 12.0% · below US interval
High Blood Pressure 33.9% (site aggregate) · US 34.4% · below US interval
High Cholesterol 35.3% (site aggregate) · US 37.4% · below US interval
Obesity 37.7% (site aggregate) · US 32.8% · above US interval
Stroke 3.3% (site aggregate) · US 3.4% · within US interval

Prevention

Cholesterol Screening 84.1% (site aggregate) · US 87.5% · below US interval
Colorectal Cancer Screening 66.6% (site aggregate) · US 66.3% · within US interval
Health Insurance 7.3% (site aggregate) · US 11.0% · below US interval
Mammography 78.7% (site aggregate) · US 76.5% · above US interval
High Blood Pressure Medication 77.8% (site aggregate) · US 77.0% · above US interval
Dental Visit 66.8% (site aggregate) · US 63.9% · above US interval
Annual Checkup 77.5% (site aggregate) · US 77.7% · within US interval

Health risk behaviors

Binge Drinking 20.5% (site aggregate) · US 15.2% · above US interval
Current Cigarette Smoking 14.5% (site aggregate) · US 11.4% · above US interval
Physical Inactivity 24.8% (site aggregate) · US 24.5% · within US interval
Short Sleep Duration 32.5% (site aggregate) · US 36.0% · below US interval

Disability

Any Disability 28.1% (site aggregate) · US 30.0% · below US interval
Cognitive Disability 13.5% (site aggregate) · US 13.7% · within US interval
Hearing Disability 7.4% (site aggregate) · US 6.7% · above US interval
Independent Living Disability 7.4% (site aggregate) · US 7.9% · below US interval
Mobility Disability 12.7% (site aggregate) · US 13.5% · below US interval
Self-care Disability 3.4% (site aggregate) · US 3.8% · below US interval
Vision Disability 4.3% (site aggregate) · US 5.5% · below US interval

Health status

General Health 17.8% (site aggregate) · US 19.2% · below US interval
Frequent Mental Distress 16.4% (site aggregate) · US 15.6% · above US interval
Frequent Physical Distress 12.7% (site aggregate) · US 12.8% · within US interval

Health-related social needs

Food Insecurity 12.0% (site aggregate) · US 14.7% · below US interval
Housing Insecurity 9.4% (site aggregate) · US 11.7% · below US interval
Transportation Barriers 6.8% (site aggregate) · US 7.7% · below US interval
Lack of Social/Emotional Support 23.3% (site aggregate) · US 23.3% · within US interval
Loneliness 32.3% (site aggregate) · US 32.0% · within US interval
Food Stamps 10.0% (site aggregate) · US 11.2% · below US interval
Utility Services Threat 6.4% (site aggregate) · US 7.4% · below US interval

Questions and answers

How is the Iowa figure calculated?

PLACES publishes county, place, tract and ZCTA estimates but no state row. Following CDC's guidance for aggregating areas, this site multiplies each county's estimate by its adult population, sums across the state's 99 counties and divides by the total adult population. The result has no published confidence interval, so county pages describe their position against it as above, below or in line with the state figure.

Which Iowa counties have the highest obesity estimates?

The county table on this page can be sorted by any of the 40 measures. Estimates are listed with their 95% confidence intervals; adjacent counties often have overlapping intervals and cannot be told apart, so the order is by point estimate only and is not a ranking of health.

What is the difference between crude and age-adjusted figures?

Crude prevalence is the estimated share of all adults. Age-adjusted prevalence re-weights the estimate to the 2000 US standard population so areas with different age structures can be compared; CDC publishes age-adjusted figures for counties and places only. The toggle on this page switches between them.

Where does this data come from?

CDC PLACES: Local Data for Better Health, 2025 release, data updated 4 Dec 2025; the state figure for obesity is 37.7% (site aggregate) in the 2025 release.

Provenance

Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release (data updated 4 Dec 2025), with the 2022, 2023, 2024 releases for reference; US government work, public domain. Boundaries and ZIP-to-county relationships: US Census Bureau. Percentages are shown to one decimal as CDC publishes them; state figures are population-weighted means computed by this site. The Iowa figure for each measure is the sum over counties of estimate × adult population, divided by the state's adult population, per CDC's guidance for aggregating areas; measures defined on a subgroup (women 50–74, adults 18–64, adults 65 and over) are weighted by total adult population as an approximation. Processing errors are corrected at the next daily build; see corrections. Generated 1 Oct 2026.