Health Profile of St. Clair County, Illinois
St. Clair 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.
-
C
St. Clair County Below averageLess healthy than 88% of counties in Illinois
Source: Map AI Methodology
General Health Overview
| Metric | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Life Expectancy (years) | 75.9 | 77.9 | 78.3 |
| Uninsured Population (%) | 5.1% | 6.9% | 8.4% |
| Self-Rated Poor Health | 18.2% | 15.6% | 16.3% |
Life expectancy in St. Clair County is 75.9 years, about 2.0 years shorter than the Illinois average of 77.9 years. The uninsured rate is 5.1%, lower than the Illinois average of 6.9%. Self-rated poor health is reported by 18.2% of residents, higher than the Illinois average of 15.6%.
Population by Age
Older residents
90,273 residents in St. Clair County are age 50 or older.
- 85+ 5,077 1,888 men · 3,188 women
- 75–84 11,813 4,691 men · 7,122 women
- 65–74 23,228 10,648 men · 12,580 women
- 50–64 50,155 24,249 men · 25,906 women
Younger residents
56,420 residents in St. Clair County are age 17 or younger.
- 12–17 17,718 9,168 boys · 8,550 girls
- 7–12 16,856 8,760 boys · 8,096 girls
- 3–7 12,585 6,472 boys · 6,113 girls
- 0–3 9,261 4,750 boys · 4,511 girls
About 15,678 residents in St. Clair County (6.2% of the population) are older than the area's life expectancy of 75.9 years.
The highlighted slice of the age axis is the share of residents older than the life-expectancy mark.
Disease Prevalence
| Disease / Condition | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Diabetes | 12.4% | 10.7% | 11.3% |
| Cancer | 5.9% | 7.1% | 6.9% |
| Heart Diseases | 6.3% | 7.1% | 7.1% |
| Adult Obesity | 41.1% | 36.1% | 34.3% |
The rate of cancer in St. Clair County is about 17% lower than in Illinois. The rate of diabetes in St. Clair County is about 16% higher than in Illinois.
Health Behaviors
| Behavior | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Smokers | 19.3% | 19.2% | 19.0% |
| Binge Drinking | 14.3% | 14.9% | 16.5% |
| Sedentary Lifestyle | 28.1% | 26.3% | 25.1% |
On average, health behaviors in St. Clair County are about the same as in Illinois.
Assuming each smoker smokes 10 cigarettes a day, that's about 377,460 cigarettes a day, 11.3 million a month, or 137.8 million a year! At 11 minutes* of life lost per cigarette, that's about 4.2 million minutes a day and 1.5 billion a year lost to smoking overall - and since life expectancy in St. Clair County is 75.9 years, that's roughly equivalent to 0.10 lifetimes a day, or 38 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 | St. Clair County | Illinois Avg | US Average |
|---|---|---|---|
| Air Pollution (μg/m³) | 7.79 | 7.63 | 6.09 |
With an annual average of 7.8 µg/m³ of fine particulate matter (PM2.5), air quality in St. Clair County is good — generally safe air quality for the vast majority of residents.
St. Clair County, IL Health Compared With Nearby Counties
St. Clair County, IL is the 2nd largest of the 5 counties compared here, 253,661 residents against a local median of 35,993. There is no headline here. Every measure below sits within 15% of the median across the nearest counties, which makes St. Clair County, IL an unremarkable member of its own neighbourhood rather than an outlier in it.
The largest of those small differences is obesity, 14% above the local median at 41.1% against 36.0%. St. Clair County, IL has the 5th lowest obesity of the 5 areas compared here.
| Area | Population | Life expectancy | Uninsured | Obesity |
|---|---|---|---|---|
| St. Clair County, IL | 253,661 | 75.9 yrs #5/5 | 5.1% #4/5 | 41.1% #5/5 |
| Monroe County, IL | 35,033 | 80.0 yrs | 2.5% | 35.1% |
| Madison County, IL | 264,024 | 76.4 yrs | 4.7% | 39.9% |
| Randolph County, IL | 30,051 | 78.2 yrs | 5.3% | 36.4% |
| Clinton County, IL | 36,954 | 79.8 yrs | 4.8% | 35.5% |
Conclusion
Considering all these factors, St. Clair County, Illinois has an overall health index grade of C, making it about on par with Illinois, and about on par with the country as a whole.
Frequently Asked Questions
Common questions about health in St. Clair County, Illinois.
What is the health grade for St. Clair County, Illinois?
St. Clair County, Illinois has a Map AI Health Index grade of C, based on life expectancy, disease rates, healthcare access, and the physical environment; a C grade means residents are close to the U.S. average.
Is St. Clair County, Illinois one of the healthiest counties in Illinois?
St. Clair County ranks 90th healthiest out of 102 counties in Illinois by the Map AI Health Index, which measures life expectancy, disease rates, healthcare access, and the physical environment.
What is the average lifespan in St. Clair County, Illinois?
People in St. Clair County, Illinois can expect to live 75.9 years on average, 2.0 years shorter than the Illinois average of 77.9.
What is the uninsured rate in St. Clair County, Illinois?
5.1% of residents in St. Clair County, Illinois have no health insurance, about 1 in 20 people, 1.7 points below the Illinois rate of 6.9%.
How common is obesity in St. Clair County, Illinois?
41.1% of adults in St. Clair County, Illinois are classified as obese, about 1 in 2, 5.1 points above the Illinois rate of 36.1%.
How many cigarettes do smokers in St. Clair County, Illinois go through, and how much life does that cost?
Assuming each smoker smokes 10 cigarettes a day, that's about 377,460 cigarettes a day, 11.3 million a month, or 137.8 million a year! At 11 minutes* of life lost per cigarette, that's about 4.2 million minutes a day and 1.5 billion a year lost to smoking overall - and since life expectancy in St. Clair County is 75.9 years, that's roughly equivalent to 0.10 lifetimes a day, or 38 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 →