Illinois MMR Vaccination Coverage
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What is the kindergarten MMR vaccination rate in Illinois? This page showsIllinois's measles, mumps, and rubella (MMR) vaccine coverage among kindergartners, whether it meets the 95% herd immunity threshold, and how it compares to nearby states. Data comes from the CDC's SchoolVaxView survey. Also seeIllinois measles cases.
kindergarten MMR coverage
2024-25 school year
Exemption Rates (2024-25)
Key Takeaways
- 1Illinois kindergarten MMR coverage is 91.8% for the 2024-25 school year.
- 2This is below the 95% threshold needed for herd immunity against measles.
- 3Coverage has declined over recent years, dropping from 92.1% in 2021-22.
- 4Non-medical exemptions (2.5%) account for most of the exemption rate.
- 5The JHU state tracker currently lists 4 measles cases for Illinois in its 2026 view.
Practical Steps for This Signal
Vaccination rates are below the 95% community-protection reference
- •The statewide kindergarten average is below the commonly used 95% MMR coverage reference
- •Some communities may be more vulnerable if measles is introduced, but local coverage can differ from the statewide average
- •Verify your family's vaccination status and get caught up if needed
- •Talk to your pediatrician if you have questions about vaccine safety
These general steps pair Local Health Signal's interpretation of the reported public-health signal with CDC prevention guidance. They are not a personal risk assessment or medical advice. Talk to your healthcare provider about what's right for you and your family.
Illinois MMR Coverage Trend
Kindergarten MMR coverage rates by school year. Red dashed line = 95% herd immunity threshold.
Measles Cases in Illinois
The JHU state tracker currently lists 4 measles cases for Illinois in its 2026 view. Multiple reported cases make the state measles page the right place to check local guidance and county detail.
View Illinois measles data →Nearby States MMR Coverage
Sources & Methods
MMR coverage data comes from the CDC's SchoolVaxView program, which collects kindergarten vaccination coverage estimates reported by states and territories. Coverage is for the 2024-25 school year. Risk levels are computed relative to the 95% herd immunity threshold.Learn more about our methods.
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Cities in Illinois
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Frequently Asked Questions
What is the MMR vaccination rate in Illinois?
Kindergarten MMR coverage in Illinois is 91.8% for the 2024-25 school year. This is below the 95% threshold needed for herd immunity against measles.
Why is 95% coverage important?
Measles is extremely contagious. About 95% of a community needs to be vaccinated to prevent sustained transmission — this is called herd immunity. When coverage drops below this threshold, outbreaks become more likely, putting unvaccinated individuals at risk.
What are vaccine exemptions?
Vaccine exemptions allow children to attend school without certain vaccinations. Medical exemptions are granted for children who cannot be safely vaccinated. Non-medical exemptions (religious or philosophical) vary by state law. Higher exemption rates are associated with lower coverage and increased outbreak risk.
Local Health Signal is not affiliated with the CDC or any government agency. Data is provided for informational purposes only and is not intended for clinical decision making. See our methods page for details on data sources and limitations.