McHenry County Health Data
McHenry County, Illinois
CDC County Health RankingsHealth Score
87/100
Excellent
Life Expectancy
79.5 yr
Uninsured Rate
5.9%
Health Statistics
Life Expectancy
79.5 yr
State avg 76.0 yr
National avg 77.5 yr
Uninsured Rate
5.9%
State avg 6.3%
National avg 9%
Primary Care Providers
45
per 100K population
National avg 82
Mental Health Providers
278
per 100K population
National avg 350
Poor / Fair Health
15.0%
State avg 17.9%
National avg 19.6%
Healthcare Access
Primary Care Physicians
48.8
per 100K residentsCDC: 45.0 per 100K
Dentists
7.4
per 100K residents
Nurse Practitioners & PAs
33.4
per 100K residents
Provider counts from CMS NPPES (National Provider Identifier Registry). Data current as of 2026.
Chronic Disease & Behavioral Health
These prevalence estimates come from the CDC PLACES program (Population-Level Analysis and Community Estimates), which combines BRFSS survey data with statistical modeling to produce county-level rates. Estimates are age-adjusted to enable fair comparisons across counties with different age distributions. Use them to spot where McHenry County differs most from state and national norms.
Most prevalent chronic conditions
| Measure | McHenry | State avg | National avg | Vs state |
|---|---|---|---|---|
| Obesity | 31.7% | 38.7% | 37.6% | 7.0 pts better than state |
| Diabetes | 8.8% | 10.2% | 11.2% | 1.4 pts better than state |
| High Blood Pressure | 29.7% | 32.0% | 33.5% | 2.3 pts better than state |
| Depression | 22.3% | 23.3% | 24.1% | 1.0 pts better than state |
Health-risk behaviors
| Measure | McHenry | State avg | National avg | Vs state |
|---|---|---|---|---|
| Current Cigarette Smoking | 11.4% | 15.5% | 16.3% | 4.1 pts better than state |
| Binge Drinking | 20.5% | 20.1% | 17.8% | near state average |
| Physical Inactivity | 20.1% | 23.4% | 27.0% | 3.3 pts better than state |
Preventive-care uptake
| Measure | McHenry | State avg | National avg | Vs state |
|---|---|---|---|---|
| Annual Routine Checkup | 75.2% | 75.6% | 74.9% | near state average |
| Dental Visit (past year) | 64.9% | 60.5% | 57.3% | 4.4 pts better than state |
| Mammography (women 50–74) | 75.5% | 70.6% | 73.3% | 4.9 pts better than state |
Daily-life impact
| Measure | McHenry | State avg | National avg | Vs state |
|---|---|---|---|---|
| Frequent Mental Distress | 16.3% | 18.6% | 18.6% | 2.3 pts better than state |
| Short Sleep Duration | 31.0% | 37.2% | 37.3% | 6.2 pts better than state |
These rates are part of the CDC PLACES survey. Compare McHenry County nationally on obesity.
Source: CDC PLACES, 2023 release · age-adjusted prevalence (%). Confidence intervals are available on individual rankings pages.
Data Story
McHenry County Life Expectancy Surpasses State and National Averages
Health data brief for McHenry County, Illinois.
McHenry County reports a life expectancy of 79.5 years, significantly exceeding the Illinois state average of 76.0 years and the national average of 77 years. This is the county's most distinctive health metric. Other indicators also track favorably: the poor or fair health rate is 15.0%, which is better than the national average of 17%. The uninsured rate is 5.9%, lower than the state's 6.3% and the national 10%. However, primary care provider availability is 45 per 100,000 residents, which remains below the national median of 70. Mental health provider availability is 278 per 100,000 residents, which is higher than the national median of 250. These figures reflect a combination of high longevity and specific provider gaps. Explore state-level data to view trends across Northern Illinois.
Sources
- CDC County Health Rankings v2
- HHS NPPES
Get Care in McHenry County, Illinois
Direct contact information for hospitals and community health resources serving this county. Hospital quality ratings come from CMS Care Compare — the federal program that measures hospital performance on safety, patient experience, and outcomes.
Hospitals near you
Compare all on Medicare.gov →Northwestern Medicine Mchenry
ERMercyhealth Hospital & Physician Clinic-crystal La
ERMercy Harvard Hospital
EReHealth Insurance
Compare health insurance plans from top carriers for McHenry County residents.
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Frequently Asked Questions
What is the health ranking of McHenry County, IL?
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How does McHenry County health compare to the Illinois average?
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Why is McHenry County healthier than the Illinois average?
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Data Sources
Health data sourced from the County Health Rankings & Roadmaps, a collaboration between the Robert Wood Johnson Foundation and the University of Wisconsin Population Health Institute.
Data is informational only. Not medical or health advice. Coverage varies by county and reporting year.