Jefferson County Health Data
Jefferson County, Illinois
Health Score
58/100
Average
Life Expectancy
74.1 yr
Uninsured Rate
6.0%
Health Statistics
Life Expectancy
74.1 yr
State avg 76.0 yr
National avg 77.5 yr
Uninsured Rate
6.0%
State avg 6.3%
National avg 9%
Primary Care Providers
49
per 100K population
National avg 82
Mental Health Providers
319
per 100K population
National avg 350
Data Story
About Health in Jefferson County, Illinois
Jefferson County lags on life expectancy
At 74.1 years, Jefferson County residents live roughly 5 years less than the U.S. average of 78.9 years. Nearly 1 in 5 residents (18.8%) report poor or fair health—well above the national average of 12%—signaling broader health challenges in the county.
Below Illinois average in longevity
Jefferson County's life expectancy of 74.1 years trails Illinois's 76.0-year state average by 1.9 years. This gap places Jefferson in the lower tier of Illinois counties when ranked by health outcomes.
Health lags similar Illinois counties
Jefferson's 74.1-year life expectancy falls behind neighboring Jersey County (74.7 years) and significantly trails high-performing counties like Kendall (80.5 years). The county's 18.8% poor/fair health rate is among the worst in its region.
Modest uninsured rate, primary care gaps
Just 6.0% of Jefferson County residents lack health insurance—slightly better than the state average of 6.3%—but access to primary care remains constrained with only 49 providers per 100,000 residents. Mental health services are stronger, with 319 providers per 100,000.
Explore coverage options now
If you're among the uninsured or underinsured in Jefferson County, now is the time to investigate marketplace plans and Medicaid eligibility. Local health departments and community health centers can guide you toward affordable coverage.
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Frequently Asked Questions
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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.