Health Profile of Johnson County, Iowa
Johnson County Health Score
The Map AI Health Index is a score that reflects local life expectancy, disease rates, healthcare access, and physical environment to help you quickly compare the overall health and well-being of different areas.
-
A
Johnson County Above averageHealthiest county in Iowa
Source: Map AI Methodology
General Health Overview
| Metric | Johnson County | Iowa Avg | US Average |
|---|---|---|---|
| Life Expectancy (years) | 82.6 | 79.2 | 78.3 |
| Uninsured Population (%) | 4.7% | 5.0% | 8.4% |
| Self-Rated Poor Health | 10.4% | 13.6% | 16.3% |
Life expectancy in Johnson County is 82.6 years, about 3.4 years longer than the Iowa average of 79.2 years. The uninsured rate is 4.7%, lower than the Iowa average of 5.0%. Self-rated poor health is reported by 10.4% of residents, lower than the Iowa average of 13.6%.
Population by Age
Older residents
39,733 residents in Johnson County are age 50 or older.
- 85+ 2,177 727 men · 1,450 women
- 75–84 4,858 2,107 men · 2,751 women
- 65–74 10,221 4,902 men · 5,318 women
- 50–64 22,478 11,395 men · 11,082 women
Younger residents
28,948 residents in Johnson County are age 17 or younger.
- 12–17 8,232 3,926 boys · 4,306 girls
- 7–12 8,598 4,378 boys · 4,220 girls
- 3–7 6,989 3,748 boys · 3,241 girls
- 0–3 5,129 2,733 boys · 2,396 girls
About 3,178 residents in Johnson County (2.0% of the population) are older than the area's life expectancy of 82.6 years.
The highlighted slice of the age axis is the share of residents older than the life-expectancy mark.
Disease Prevalence
| Disease / Condition | Johnson County | Iowa Avg | US Average |
|---|---|---|---|
| Diabetes | 6.7% | 10.6% | 11.3% |
| Cancer | 4.7% | 7.6% | 6.9% |
| Heart Diseases | 4.2% | 7.3% | 7.1% |
| Adult Obesity | 28.1% | 37.3% | 34.3% |
The rate of heart disease in Johnson County is about 42% lower than in Iowa. The rate of cancer in Johnson County is about 37% lower than in Iowa. The rate of diabetes in Johnson County is about 37% lower than in Iowa.
Health Behaviors
| Behavior | Johnson County | Iowa Avg | US Average |
|---|---|---|---|
| Smokers | 13.4% | 17.6% | 19.0% |
| Binge Drinking | 23.4% | 20.8% | 16.5% |
| Sedentary Lifestyle | 19.8% | 25.4% | 25.1% |
The rate of smoking in Johnson County is about 24% lower than in Iowa. The rate of sedentary lifestyle in Johnson County is about 22% lower than in Iowa.
Assuming each smoker smokes 10 cigarettes a day, that's about 169,863 cigarettes a day, 5.1 million a month, or 62.0 million a year! At 11 minutes* of life lost per cigarette, that's about 1.9 million minutes a day and 682.0 million a year lost to smoking overall - and since life expectancy in Johnson County is 82.6 years, that's roughly equivalent to 0.04 lifetimes a day, or 16 lifetimes a year.
* Source: Shaw M, Mitchell R, Dorling D. "Time for a smoke? One cigarette reduces your life by 11 minutes." BMJ. 2000;320:53.
Illustrative only. This is not an estimate of how many people actually die from smoking each day or year - it's a rough, order-of-magnitude comparison meant to help grasp the scale of smoking in this area. We take no responsibility for any decisions made based on this figure.
Air Quality
| Metric | Johnson County | Iowa Avg | US Average |
|---|---|---|---|
| Air Pollution (μg/m³) | 7.63 | 6.49 | 6.09 |
With an annual average of 7.6 µg/m³ of fine particulate matter (PM2.5), air quality in Johnson County is good — generally safe air quality for the vast majority of residents.
Johnson County, IA Health Compared With Nearby Counties
Johnson County, IA is the 2nd largest of the 6 counties compared here, 156,634 residents against a local median of 22,560. Where Johnson County, IA breaks from the counties next to it is obesity, sitting 29% below the local median of 39.6% at 28.1%. That is the better end of the local range on this measure.
The counties themselves sit within 5.5% of each other on obesity, a tighter band than the gap between any of them and Johnson County, IA, which makes it a genuine outlier here rather than one end of a wide local spread. Johnson County, IA has the lowest obesity of the 6 areas compared here.
| Area | Population | Life expectancy | Uninsured | Obesity |
|---|---|---|---|---|
| Johnson County, IA | 156,634 | 82.6 yrs #1/6 | 4.7% #5/6 | 28.1% #1/6 |
| Washington County, IA | 22,560 | 79.9 yrs | 7.6% | 39.1% |
| Linn County, IA | 230,016 | 79.3 yrs | 4.1% | 37.3% |
| Cedar County, IA | 18,349 | 82.2 yrs | 4.2% | 39.9% |
| Iowa County, IA | 16,507 | 79.9 yrs | 3.2% | 39.6% |
| Muscatine County, IA | 42,559 | 80.2 yrs | 4.3% | 42.8% |
Conclusion
Considering all these factors, Johnson County, Iowa has an overall health index grade of A, making it notably better than Iowa, and notably better than the country as a whole.
Frequently Asked Questions
Common questions about health in Johnson County, Iowa.
What is the health grade for Johnson County, Iowa?
Johnson County, Iowa has a Map AI Health Index grade of A, based on life expectancy, disease rates, healthcare access, and the physical environment; an A grade means residents are much healthier than the U.S. average.
Is Johnson County, Iowa one of the healthiest counties in Iowa?
Yes. Johnson County ranks 1st of 99 counties in Iowa by the Map AI Health Index, making it the healthiest of them all.
What is the average lifespan in Johnson County, Iowa?
People in Johnson County, Iowa can expect to live 82.6 years on average, 3.4 years longer than the Iowa average of 79.2.
How many people lack health insurance in Johnson County, Iowa?
4.7% of residents in Johnson County, Iowa have no health insurance, about 1 in 21 people, about the same as the Iowa rate of 5.0%.
What is the obesity rate in Johnson County, Iowa?
28.1% of adults in Johnson County, Iowa are classified as obese, about 1 in 4, 9.2 points below the Iowa rate of 37.3%.
How many cigarettes do smokers in Johnson County, Iowa go through, and how much life does that cost?
Assuming each smoker smokes 10 cigarettes a day, that's about 169,863 cigarettes a day, 5.1 million a month, or 62.0 million a year! At 11 minutes* of life lost per cigarette, that's about 1.9 million minutes a day and 682.0 million a year lost to smoking overall - and since life expectancy in Johnson County is 82.6 years, that's roughly equivalent to 0.04 lifetimes a day, or 16 lifetimes a year.
Analyze any area in the US
Get local demographics for any address, aggregated by drive time or radius, on the interactive map.
Explore the map →