California MMR Vaccination Coverage
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What is the kindergarten MMR vaccination rate in California? This page showsCalifornia'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 seeCalifornia measles cases.
kindergarten MMR coverage
2024-25 school year
Exemption Rates (2024-25)
Key Takeaways
- 1California kindergarten MMR coverage is 96.1% for the 2024-25 school year.
- 2This meets the 95% herd immunity threshold for measles.
- 3Coverage has improved over recent years, up from 95.1% in 2020-21.
- 4The JHU state tracker currently lists 28 measles cases for California in its 2026 view.
Practical Steps for This Signal
Statewide coverage is near the community-protection reference
- •The statewide kindergarten average is near 95%, but it does not show whether every school or community has similar coverage
- •Make sure your children are up to date on all recommended vaccines before school
- •If you know families who have questions about vaccines, encourage them to talk to their pediatrician
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.
California MMR Coverage Trend
Kindergarten MMR coverage rates by school year. Red dashed line = 95% herd immunity threshold.
Measles Cases in California
The JHU state tracker currently lists 28 measles cases for California in its 2026 view. Multiple reported cases make the state measles page the right place to check local guidance and county detail.
View California 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 California
Health data available for these California cities:
Frequently Asked Questions
What is the MMR vaccination rate in California?
Kindergarten MMR coverage in California is 96.1% for the 2024-25 school year. This meets the 95% herd immunity threshold.
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.