Health by ZIP

Jefferson County, WI health estimates

Wisconsin. 85,743 residents, 69,165 adults (the Census population estimates that PLACES uses). 10 ZIP Codes and 14 places with estimates.

Compare with another placeZIP Codes of the county (CSV)

Jefferson County in Wisconsin. 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 40.7% of the adults of Jefferson County, WI have obesity.

The 95% confidence interval is 34.6% to 47.5%.

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: Jefferson County, WI
MeasureEstimate and interval on a scale of 0 to 50%Estimate95% intervalWI figure (site aggregate)United States
All teeth lost among adults aged ≥65 yearsBRFSS 202212.5%9.7 to 15.59.9%in line12.2%similar13.0%10.1 to 16.110.1%in line12.6%similar
Arthritis among adultsBRFSS 202326.2%23.4 to 29.226.6%in line25.4%similar22.3%19.8 to 25.022.7%in line21.9%similar
Cancer (non-skin) or melanoma among adultsBRFSS 20238.7%7.9 to 9.78.6%in line7.9%similar7.1%6.4 to 7.97.0%in line6.6%similar
Chronic obstructive pulmonary disease among adultsBRFSS 20236.4%5.3 to 7.66.5%in line6.2%similar5.4%4.5 to 6.45.5%in line5.3%similar
Coronary heart disease among adultsBRFSS 20236.5%5.7 to 7.46.6%in line6.4%similar5.3%4.6 to 6.05.3%in line5.3%similar
Current asthma among adultsBRFSS 202310.9%9.6 to 12.210.8%in line9.8%similar10.9%9.6 to 12.310.9%in line9.8%similar
Depression among adultsBRFSS 202322.8%19.7 to 26.423.2%in line20.2%similar23.7%20.5 to 27.424.1%in line20.7%similar
Diagnosed diabetes among adultsBRFSS 202310.7%9.2 to 12.411.4%in line12.0%similar8.9%7.7 to 10.39.6%in line10.3%similar
High blood pressure among adultsBRFSS 202331.1%27.8 to 34.833.3%in line34.4%similar27.2%24.1 to 30.729.4%in line30.7%similar
High cholesterol among adults who have ever been screenedBRFSS 202332.9%29.2 to 36.834.4%in line37.4%lowerinterval 37.1 to 37.827.9%24.5 to 31.629.5%in line32.2%lowerinterval 31.9 to 32.6
Obesity among adultsBRFSS 202340.7%34.6 to 47.537.7%in line32.8%higherinterval 32.4 to 33.140.9%34.9 to 47.737.9%in line32.9%higherinterval 32.5 to 33.2
Stroke among adultsBRFSS 20233.2%2.8 to 3.63.4%in line3.4%similar2.7%2.3 to 3.02.8%in line2.9%similar
Prevention: Jefferson County, WI
MeasureEstimate and interval on a scale of 0 to 90%Estimate95% intervalWI figure (site aggregate)United States
Cholesterol screening among adultsBRFSS 202385.6%83.3 to 87.785.9%in line87.5%similar83.7%81.1 to 86.184.1%in line85.6%similar
Colorectal cancer screening among adults aged 45–75 yearsBRFSS 202266.6%61.0 to 71.569.4%in line66.3%similar60.9%55.1 to 66.163.5%in line54.1%higherinterval 53.7 to 54.6
Current lack of health insurance among adults aged 18-64 yearsBRFSS 20237.9%6.3 to 10.18.0%in line11.0%lowerinterval 10.7 to 11.38.5%6.7 to 10.78.4%in line11.5%lowerinterval 11.2 to 11.9
Mammography use among women aged 50-74 yearsBRFSS 202277.8%69.5 to 84.580.3%in line76.5%similar77.2%68.8 to 84.179.9%in line76.0%similar
Taking medicine to control high blood pressure among adults with high blood pressureBRFSS 202377.6%74.6 to 80.277.8%in line77.0%similar56.5%52.2 to 60.758.0%in line57.5%similar
Visited dentist or dental clinic in the past year among adultsBRFSS 202269.2%65.4 to 72.767.1%in line63.9%higherinterval 63.6 to 64.268.5%64.6 to 72.166.4%in line63.4%higherinterval 63.1 to 63.7
Visits to doctor for routine checkup within the past year among adultsBRFSS 202376.4%72.9 to 79.677.6%in line77.7%similar74.0%70.1 to 77.475.4%in line75.7%similar
Health risk behaviors: Jefferson County, WI
MeasureEstimate and interval on a scale of 0 to 40%Estimate95% intervalWI figure (site aggregate)United States
Binge drinking among adultsBRFSS 202319.1%16.0 to 22.319.0%in line15.2%higherinterval 15.0 to 15.521.1%17.8 to 24.520.9%in line16.6%higherinterval 16.3 to 16.9
Current cigarette smoking among adultsBRFSS 202313.4%10.7 to 16.213.6%in line11.4%similar13.8%10.8 to 16.814.0%in line11.6%similar
No leisure-time physical activity among adultsBRFSS 202327.7%22.9 to 32.726.6%in line24.5%similar26.7%22.2 to 31.525.6%in line23.7%similar
Short sleep duration among adultsBRFSS 202231.0%25.3 to 37.332.6%in line36.0%similar31.7%25.9 to 38.033.6%in line36.8%similar
Disability: Jefferson County, WI
MeasureEstimate and interval on a scale of 0 to 40%Estimate95% intervalWI figure (site aggregate)United States
Any disability among adultsBRFSS 202328.5%24.2 to 33.129.4%in line30.0%similar26.9%22.8 to 31.327.8%in line28.3%similar
Cognitive disability among adultsBRFSS 202312.6%10.6 to 14.712.8%in line13.7%similar13.1%11.0 to 15.413.4%in line14.1%similar
Hearing disability among adultsBRFSS 20236.9%6.1 to 7.96.9%in line6.7%similar5.9%5.2 to 6.75.9%in line5.8%similar
Independent living disability among adultsBRFSS 20237.6%6.4 to 8.97.9%in line7.9%similar7.4%6.2 to 8.77.8%in line7.6%similar
Mobility disability among adultsBRFSS 202312.7%10.6 to 15.013.4%in line13.5%similar10.8%9.0 to 12.711.4%in line11.7%similar
Self-care disability among adultsBRFSS 20233.3%2.8 to 3.83.5%in line3.8%similar2.9%2.5 to 3.43.2%in line3.4%similar
Vision disability among adultsBRFSS 20234.1%3.5 to 4.74.5%in line5.5%lowerinterval 5.4 to 5.73.8%3.3 to 4.44.2%in line5.2%lowerinterval 5.1 to 5.4
Health status: Jefferson County, WI
MeasureEstimate and interval on a scale of 0 to 30%Estimate95% intervalWI figure (site aggregate)United States
Fair or poor self-rated health status among adultsBRFSS 202316.8%14.0 to 19.917.8%in line19.2%similar15.9%13.2 to 18.816.9%in line18.3%similar
Frequent mental distress among adultsBRFSS 202315.5%13.4 to 17.715.5%in line15.6%similar16.5%14.3 to 19.016.5%in line16.3%similar
Frequent physical distress among adultsBRFSS 202313.0%11.2 to 15.012.9%in line12.8%similar12.2%10.4 to 14.112.1%in line12.1%similar

ZIP Codes in Jefferson County

ZIP Codes in Jefferson County, WI, in ZIP Code order
ZIP CodeResidentsEstimate95% confidence intervalAgainst Jefferson County
ZIP Code 530363,54040.1%34.5 to 45.7similar
ZIP Code 530384,37240.9%34.5 to 47.2similar
ZIP Code 5309418,51042.4%36.3 to 48.7similar
ZIP Code 531371,70240.9%34.6 to 47.0similar
ZIP Code 531562,97242.8%36.6 to 49.4similar
ZIP Code 531782,70340.9%34.9 to 47.4similar
ZIP Code 5353818,64341.8%35.7 to 48.1similar
ZIP Code 5354910,19941.7%35.4 to 48.0similar
ZIP Code 535518,92039.8%33.6 to 46.2similar
ZIP Code 535945,32441.9%36.6 to 47.4similar

The dashed line in each drawing is Jefferson 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 Jefferson County as a CSV file, with all measures.

Cities and places in Jefferson County

Places in Jefferson County, WI, in name order
PlaceResidentsEstimate95% confidence intervalAgainst Jefferson County
Fort Atkinson12,57942.0%35.8 to 48.4similar
Hebron20943.0%36.6 to 49.8similar
Helenville23841.3%35.0 to 47.6similar
Ixonia2,36739.9%33.6 to 46.2similar
Jefferson7,79341.9%35.6 to 48.3similar
Johnson Creek3,31840.6%34.4 to 46.9similar
Lake Koshkonong1,23942.2%35.9 to 48.6similar
Lake Mills6,21139.5%33.2 to 46.2similar
Lake Ripley1,91142.1%35.8 to 48.7similar
Palmyra1,71942.6%36.3 to 49.1similar
Rome75241.2%35.0 to 47.6similar
Sullivan65140.5%34.3 to 46.8similar
Waterloo3,49242.2%35.9 to 48.6similar
Watertown22,92642.4%37.6 to 47.2similar

The dashed line in each drawing is Jefferson 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 Jefferson County, WI, for 12 of the 40 measures.

Jefferson County, WI: crude prevalence and 95% confidence interval in each PLACES release
Measure2022 release2023 release2024 release2025 release
COPD6.3%5.3 to 7.35.9%4.8 to 7.36.3%5.5 to 7.16.4%5.3 to 7.6
Coronary Heart Disease6.4%5.7 to 7.06.0%5.1 to 7.06.6%5.8 to 7.46.5%5.7 to 7.4
Current Asthma9.7%9.2 to 10.210.2%9.0 to 11.610.4%9.0 to 11.910.9%9.6 to 12.2
Depression20.7%19.5 to 22.022.0%18.2 to 26.223.3%19.6 to 27.322.8%19.7 to 26.4
Diabetes9.3%8.5 to 10.08.7%7.2 to 10.310.0%8.5 to 11.710.7%9.2 to 12.4
High Blood Pressure30.2%28.9 to 31.631.6%27.4 to 35.931.3%27.6 to 35.231.1%27.8 to 34.8
Obesity36.0%34.1 to 37.833.3%26.6 to 40.439.7%32.6 to 47.040.7%34.6 to 47.5
Health Insurance10.7%8.7 to 12.96.8%5.1 to 9.05.4%4.5 to 6.27.9%6.3 to 10.1
Binge Drinking24.4%23.6 to 25.322.0%18.5 to 25.921.6%17.7 to 25.919.1%16.0 to 22.3
Current Cigarette Smoking16.9%14.0 to 19.914.0%10.5 to 17.714.3%12.3 to 16.513.4%10.7 to 16.2
Physical Inactivity20.5%17.9 to 23.219.3%15.1 to 23.720.6%17.0 to 24.627.7%22.9 to 32.7
General Health12.0%10.2 to 13.913.1%10.5 to 15.715.4%13.4 to 17.516.8%14.0 to 19.9

Official sources

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

Cite this page

Health by ZIP. Jefferson County, WI: 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/wi/jefferson-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 Jefferson County, WI

How does the obesity estimate of Jefferson County, WI compare with Wisconsin?

The Wisconsin figure is 37.7% (site aggregate).

It has no confidence interval.

The Wisconsin figure is inside the interval of Jefferson County, WI. The estimate is in line with it.

How does the obesity estimate of Jefferson County, WI 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 Jefferson County, WI is higher.

What does CDC estimate for diagnosed diabetes in Jefferson County, WI?

CDC estimates that 10.7% of the adults of Jefferson County, WI have diagnosed diabetes.

The 95% confidence interval is 9.2% to 12.4%.

PLACES 2025, BRFSS 2023.

For how many measures is Jefferson County, WI above or below the Wisconsin figure?

Jefferson County, WI and the Wisconsin figure both have a value for 40 measures.

The estimate for Jefferson County, WI is above the Wisconsin figure for 0 measures.

It is below the Wisconsin figure for 0 measures.

It is in line with the Wisconsin figure for 40 measures.