Williamson County Health Data
Williamson County, Illinois
CDC County Health RankingsHealth Score
68/100
Average
Life Expectancy
75.5 yr
Uninsured Rate
5.0%
Health Statistics
Life Expectancy
75.5 yr
State avg 76.0 yr
National avg 77.5 yr
Uninsured Rate
5.0%
State avg 6.3%
National avg 9%
Primary Care Providers
79
per 100K population
National avg 82
Mental Health Providers
490
per 100K population
National avg 350
Poor / Fair Health
18.0%
State avg 17.9%
National avg 19.6%
Healthcare Access
Primary Care Physicians
56.8
per 100K residentsCDC: 79.2 per 100K
Dentists
9.0
per 100K residents
Nurse Practitioners & PAs
44.8
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 Williamson County differs most from state and national norms.
Most prevalent chronic conditions
| Measure | Williamson | State avg | National avg | Vs state |
|---|---|---|---|---|
| Obesity | 39.9% | 38.7% | 37.6% | 1.2 pts worse than state |
| Diabetes | 10.0% | 10.2% | 11.2% | near state average |
| High Blood Pressure | 32.0% | 32.0% | 33.5% | near state average |
| Depression | 24.0% | 23.3% | 24.1% | 0.7 pts worse than state |
Health-risk behaviors
| Measure | Williamson | State avg | National avg | Vs state |
|---|---|---|---|---|
| Current Cigarette Smoking | 14.9% | 15.5% | 16.3% | 0.6 pts better than state |
| Binge Drinking | 20.4% | 20.1% | 17.8% | near state average |
| Physical Inactivity | 22.8% | 23.4% | 27.0% | 0.6 pts better than state |
Preventive-care uptake
| Measure | Williamson | State avg | National avg | Vs state |
|---|---|---|---|---|
| Annual Routine Checkup | 75.6% | 75.6% | 74.9% | near state average |
| Dental Visit (past year) | 59.2% | 60.5% | 57.3% | 1.3 pts worse than state |
| Mammography (women 50–74) | 70.2% | 70.6% | 73.3% | near state average |
Daily-life impact
| Measure | Williamson | State avg | National avg | Vs state |
|---|---|---|---|---|
| Frequent Mental Distress | 18.4% | 18.6% | 18.6% | near state average |
| Short Sleep Duration | 38.5% | 37.2% | 37.3% | 1.3 pts worse than state |
These rates are part of the CDC PLACES survey. Compare Williamson County nationally on dental visit (past year).
Source: CDC PLACES, 2023 release · age-adjusted prevalence (%). Confidence intervals are available on individual rankings pages.
Data Story
Williamson County Mental Health Provider Density Nearly Double National Median
Health data brief for Williamson County, Illinois.
Williamson County records 490 mental health providers per 100,000 residents, nearly double the national median of 250 per 100,000. This distinct provider ratio occurs alongside an uninsured rate of 5.0%, which is lower than both the state figure of 6.3% and the national figure of 10%. The life expectancy for the county is 75.5 years, slightly lower than the state figure of 76.0 years and the national figure of 77 years. Additionally, 18.0% of the population reports poor or fair health, which is higher than the national figure of 17%. Primary care provider availability in the county is 79 per 100,000, higher than the national median of 70 per 100,000. These data points provide a snapshot of the regional healthcare landscape compared to wider state and national metrics. Explore state-level data.
Sources
- CDC County Health Rankings v2
- HHS NPPES
Get Care in Williamson 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 →Marion Il Va Medical Center
ERHeartland Regional Medical Center
ERHerrin Hospital
EReHealth Insurance
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Frequently Asked Questions
What is the health ranking of Williamson County, IL?
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How does Williamson County health compare to the Illinois average?
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Why is Williamson 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.