Health by ZIP

Winnebago County, IL health estimates

Illinois. 280,922 residents, 215,494 adults (the Census population estimates that PLACES uses). 20 ZIP Codes and 13 places with estimates.

Compare with another placeZIP Codes of the county (CSV)

Winnebago County in Illinois. Boundaries: US Census Bureau.

The figures are model-based estimates for the adults of an area. They are not measurements. They say nothing about one person.

We do not produce estimates for individuals; only aggregated results for counties, places, census tracts, or ZCTAs.

First, it is not adequate to simply compare point estimates. The confidence intervals should also be considered, and some are very broad.

Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)

PLACES 2025 release. Survey years (BRFSS): 2022 and 2023. CDC updated the data on . What an estimate is. How to read an interval. The site gives no medical advice.

CDC estimates that 42.0% of the adults of Winnebago County, IL have obesity.

The 95% confidence interval is 35.0% to 49.7%.

PLACES 2025, BRFSS 2023.

Report card: 40 measures by CDC category

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

"Higher" or "lower": the two 95% confidence intervals do not overlap. "Similar": they overlap. Against the state figure, which has no interval, the words are "above", "below" and "in line".

Health outcomes: Winnebago County, IL
MeasureEstimate and interval on a scale of 0 to 60%Estimate95% intervalIL figure (site aggregate)United States
All teeth lost among adults aged ≥65 yearsBRFSS 202215.2%12.4 to 18.310.3%above12.2%similar15.3%12.5 to 18.610.6%above12.6%similar
Arthritis among adultsBRFSS 202329.3%25.9 to 33.024.2%above25.4%higherinterval 25.1 to 25.624.9%21.8 to 28.221.3%above21.9%similar
Cancer (non-skin) or melanoma among adultsBRFSS 20238.5%7.6 to 9.57.6%in line7.9%similar6.8%6.1 to 7.66.4%in line6.6%similar
Chronic obstructive pulmonary disease among adultsBRFSS 20238.3%6.9 to 10.06.3%above6.2%higherinterval 6.1 to 6.37.0%5.9 to 8.45.6%above5.3%higherinterval 5.2 to 5.4
Coronary heart disease among adultsBRFSS 20237.3%6.4 to 8.45.9%above6.4%similar5.8%5.1 to 6.74.9%above5.3%similar
Current asthma among adultsBRFSS 202310.6%9.3 to 12.19.9%in line9.8%similar10.7%9.4 to 12.19.9%in line9.8%similar
Depression among adultsBRFSS 202322.5%19.2 to 26.419.8%in line20.2%similar23.4%19.9 to 27.320.3%in line20.7%similar
Diagnosed diabetes among adultsBRFSS 202313.9%12.0 to 16.111.7%above12.0%similar11.7%10.1 to 13.610.2%in line10.3%similar
High blood pressure among adultsBRFSS 202338.2%34.0 to 42.733.0%above34.4%similar33.9%29.9 to 38.029.9%in line30.7%similar
High cholesterol among adults who have ever been screenedBRFSS 202338.3%34.1 to 42.835.4%in line37.4%similar32.8%28.9 to 37.331.3%in line32.2%similar
Obesity among adultsBRFSS 202342.0%35.0 to 49.734.0%above32.8%higherinterval 32.4 to 33.142.2%35.1 to 49.734.1%above32.9%higherinterval 32.5 to 33.2
Stroke among adultsBRFSS 20234.0%3.5 to 4.53.3%above3.4%similar3.3%2.9 to 3.72.8%above2.9%similar
Prevention: Winnebago County, IL
MeasureEstimate and interval on a scale of 0 to 90%Estimate95% intervalIL figure (site aggregate)United States
Cholesterol screening among adultsBRFSS 202386.2%84.0 to 88.287.4%in line87.5%similar84.3%81.8 to 86.686.2%in line85.6%similar
Colorectal cancer screening among adults aged 45–75 yearsBRFSS 202260.8%55.2 to 66.460.2%in line66.3%similar55.2%49.6 to 61.055.4%in line54.1%similar
Current lack of health insurance among adults aged 18-64 yearsBRFSS 202310.7%8.7 to 13.39.9%in line11.0%similar11.2%9.1 to 13.910.2%in line11.5%similar
Mammography use among women aged 50-74 yearsBRFSS 202271.4%62.6 to 79.573.5%in line76.5%similar70.4%61.4 to 78.773.0%in line76.0%similar
Taking medicine to control high blood pressure among adults with high blood pressureBRFSS 202377.9%74.9 to 80.675.7%in line77.0%similar59.1%54.6 to 63.856.7%in line57.5%similar
Visited dentist or dental clinic in the past year among adultsBRFSS 202256.5%52.5 to 60.563.4%below63.9%lowerinterval 63.6 to 64.255.4%51.4 to 59.563.0%below63.4%lowerinterval 63.1 to 63.7
Visits to doctor for routine checkup within the past year among adultsBRFSS 202378.9%75.3 to 82.377.8%in line77.7%similar76.7%72.9 to 80.476.1%in line75.7%similar
Health risk behaviors: Winnebago County, IL
MeasureEstimate and interval on a scale of 0 to 50%Estimate95% intervalIL figure (site aggregate)United States
Binge drinking among adultsBRFSS 202316.3%13.5 to 19.617.8%in line15.2%similar18.1%15.0 to 21.719.1%in line16.6%similar
Current cigarette smoking among adultsBRFSS 202315.5%12.7 to 18.912.1%above11.4%higherinterval 11.2 to 11.615.9%13.1 to 19.512.3%above11.6%higherinterval 11.4 to 11.9
No leisure-time physical activity among adultsBRFSS 202327.0%22.5 to 32.423.0%in line24.5%similar25.9%21.5 to 31.122.3%in line23.7%similar
Short sleep duration among adultsBRFSS 202236.5%30.0 to 43.435.4%in line36.0%similar37.7%31.1 to 44.736.2%in line36.8%similar
Disability: Winnebago County, IL
MeasureEstimate and interval on a scale of 0 to 40%Estimate95% intervalIL figure (site aggregate)United States
Any disability among adultsBRFSS 202333.3%28.8 to 38.527.6%above30.0%similar31.4%27.0 to 36.626.4%above28.3%similar
Cognitive disability among adultsBRFSS 202314.6%12.6 to 17.112.6%in line13.7%similar15.3%13.2 to 17.913.0%above14.1%similar
Hearing disability among adultsBRFSS 20237.6%6.6 to 8.86.2%above6.7%similar6.4%5.6 to 7.35.4%above5.8%similar
Independent living disability among adultsBRFSS 20239.4%8.1 to 11.07.6%above7.9%similar9.2%7.9 to 10.77.5%above7.6%higherinterval 7.4 to 7.8
Mobility disability among adultsBRFSS 202316.2%13.7 to 19.112.8%above13.5%similar13.8%11.7 to 16.211.3%above11.7%similar
Self-care disability among adultsBRFSS 20234.4%3.8 to 5.23.5%above3.8%similar4.0%3.5 to 4.63.3%above3.4%similar
Vision disability among adultsBRFSS 20235.9%5.1 to 6.84.8%above5.5%similar5.5%4.8 to 6.34.6%above5.2%similar
Health status: Winnebago County, IL
MeasureEstimate and interval on a scale of 0 to 30%Estimate95% intervalIL figure (site aggregate)United States
Fair or poor self-rated health status among adultsBRFSS 202322.3%18.9 to 26.218.6%above19.2%similar21.2%18.0 to 24.917.9%above18.3%similar
Frequent mental distress among adultsBRFSS 202317.6%15.4 to 20.115.6%in line15.6%similar18.8%16.4 to 21.516.3%above16.3%similar
Frequent physical distress among adultsBRFSS 202314.9%13.0 to 17.312.2%above12.8%similar14.0%12.2 to 16.111.6%above12.1%similar

ZIP Codes in Winnebago County

ZIP Codes in Winnebago County, IL, in ZIP Code order
ZIP CodeResidentsEstimate95% confidence intervalAgainst Winnebago County
ZIP Code 610164,73836.9%30.7 to 43.4similar
ZIP Code 610242,45637.5%30.5 to 44.8similar
ZIP Code 610633,90137.7%31.1 to 44.8similar
ZIP Code 6107211,25937.9%31.0 to 45.3similar
ZIP Code 6107319,93637.1%30.5 to 44.5similar
ZIP Code 610777439.5%32.1 to 47.5similar
ZIP Code 6107922637.6%30.7 to 45.0similar
ZIP Code 6108011,25240.3%33.3 to 47.6similar
ZIP Code 610885,96637.6%30.8 to 44.9similar
ZIP Code 6110119,78449.3%42.1 to 56.9similar
ZIP Code 6110217,28149.6%42.5 to 57.1similar
ZIP Code 6110323,29446.0%38.8 to 53.5similar
ZIP Code 6110417,35450.9%43.6 to 58.5similar
ZIP Code 6110730,72238.9%32.2 to 46.2similar
ZIP Code 6110829,66041.2%34.2 to 48.6similar
ZIP Code 6110926,95842.6%35.6 to 50.1similar
ZIP Code 6111123,02840.8%34.3 to 47.9similar
ZIP Code 6111213929.1%22.8 to 36.4similar
ZIP Code 6111415,56937.0%30.4 to 43.9similar
ZIP Code 6111522,59940.8%33.8 to 48.3similar

The dashed line in each drawing is Winnebago County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.

A ZIP Code is in the county that holds the largest share of its land. A ZIP Code that is in two counties shows one time. Download the ZIP Codes of Winnebago County as a CSV file, with all measures.

Cities and places in Winnebago County

Places in Winnebago County, IL, in name order
PlaceResidentsEstimate95% confidence intervalAgainst Winnebago County
Cherry Valley2,90536.5%30.3 to 42.9similar
Durand1,39037.2%30.1 to 44.6similar
Lake Summerset2,34237.6%31.7 to 43.7similar
Loves Park23,39740.8%34.2 to 47.8similar
Machesney Park22,95040.8%33.8 to 48.3similar
New Milford79438.4%31.6 to 45.9similar
Pecatonica2,09037.4%30.5 to 44.7similar
Rockford148,65544.7%37.5 to 52.1similar
Rockton7,86337.7%30.9 to 45.3similar
Roscoe10,98337.6%30.8 to 45.0similar
South Beloit7,98940.6%33.5 to 48.1similar
Westlake Village1,49338.3%31.3 to 45.5similar
Winnebago2,94037.5%30.4 to 44.8similar

The dashed line in each drawing is Winnebago County. The words are "higher" or "lower" when the two 95% confidence intervals do not overlap, and "similar" when they overlap. The table is in name order. The intervals of many rows overlap, so the table gives no rank.

Estimates in earlier PLACES releases

The current modeling procedure does not support using the estimates to track changes at the local level over time.

Centers for Disease Control and Prevention, PLACES Frequently Asked Questions (page dated 11 Dec 2025, read on 2 Oct 2026)

The table lists what each PLACES release published for Winnebago County, IL, for 12 of the 40 measures.

Winnebago County, IL: crude prevalence and 95% confidence interval in each PLACES release
Measure2022 release2023 release2024 release2025 release
COPD8.1%7.0 to 9.38.3%6.8 to 10.08.9%7.9 to 9.98.3%6.9 to 10.0
Coronary Heart Disease7.6%6.9 to 8.27.2%6.2 to 8.38.1%7.3 to 9.07.3%6.4 to 8.4
Current Asthma10.0%9.5 to 10.510.3%9.0 to 11.810.9%9.6 to 12.410.6%9.3 to 12.1
Depression17.5%16.5 to 18.419.9%16.3 to 23.921.4%18.1 to 25.222.5%19.2 to 26.4
Diabetes12.4%11.6 to 13.212.9%11.1 to 15.013.6%11.8 to 15.613.9%12.0 to 16.1
High Blood Pressure36.2%35.1 to 37.237.0%32.7 to 41.536.4%32.2 to 40.838.2%34.0 to 42.7
Obesity41.5%40.0 to 43.041.9%34.6 to 49.538.1%30.9 to 45.942.0%35.0 to 49.7
Health Insurance13.2%11.4 to 15.310.4%8.3 to 13.011.5%10.1 to 12.610.7%8.7 to 13.3
Binge Drinking13.6%13.1 to 14.114.2%11.5 to 17.317.2%14.1 to 20.816.3%13.5 to 19.6
Current Cigarette Smoking18.8%16.3 to 21.317.6%14.2 to 21.417.8%15.5 to 20.315.5%12.7 to 18.9
Physical Inactivity28.4%25.9 to 30.831.7%26.4 to 37.228.5%24.2 to 33.227.0%22.5 to 32.4
General Health17.2%15.3 to 19.318.9%16.0 to 22.123.3%20.8 to 26.022.3%18.9 to 26.2

Official sources

The links open the pages of the agencies in a new tab.

Cite this page

Health by ZIP. Winnebago County, IL: CDC PLACES estimates, 2025 release. Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health. CDC updated the data on 4 Dec 2025. https://healthbyzip.com/county/il/winnebago-county/

The address of this page stays the same. CDC's own citation is at the foot of the page.

Where the figures come from

Source: Centers for Disease Control and Prevention, PLACES: Local Data for Better Health, 2025 release. CDC updated the data on . The page shows the 2022, 2023, 2024 releases as a record. The data are a US government work in the public domain. Data set on data.cdc.gov. The boundaries and the links between ZIP Codes, counties and places come from the US Census Bureau. Percentages have one decimal, as CDC publishes them. A state figure is a site aggregate: the site computes it. The site corrects an error of its own processing at the next build. See corrections.

Questions about Winnebago County, IL

How does the obesity estimate of Winnebago County, IL compare with Illinois?

The Illinois figure is 34.0% (site aggregate).

It has no confidence interval.

The whole interval of Winnebago County, IL is above the Illinois figure.

How does the obesity estimate of Winnebago County, IL compare with the nation?

The US estimate is 32.8%.

The 95% confidence interval is 32.4% to 33.1%.

The two intervals do not overlap. The estimate for Winnebago County, IL is higher.

What does CDC estimate for diagnosed diabetes in Winnebago County, IL?

CDC estimates that 13.9% of the adults of Winnebago County, IL have diagnosed diabetes.

The 95% confidence interval is 12.0% to 16.1%.

PLACES 2025, BRFSS 2023.

For how many measures is Winnebago County, IL above or below the Illinois figure?

Winnebago County, IL and the Illinois figure both have a value for 40 measures.

The estimate for Winnebago County, IL is above the Illinois figure for 18 measures.

It is below the Illinois figure for 1 measure.

It is in line with the Illinois figure for 21 measures.