California Health Interview Survey


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 CHIS 2015 is here!

CHIS interviewed 21,444 households in 2015, including 21,034 adults, 754 teens and 2,157 children. New topics in the 2015 survey include discrimination in getting medical care, use of telemedical care, teen psychological distress, and much more!
Find health statistics by state, county, region and Los Angeles and San Diego service areas using our free, user-friendly web tool AskCHIS.
Find health statistics by ZIP code, legislative district or city using AskCHIS Neighborhood Edition.
Learn more about CHIS 2015

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AskCHIS and AskCHIS NE are two FREE online tools that enable you to search for health statistics by:

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  • SPA

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Media can get quick data on health insurance, chronic diseases, cancer, HPV and many other topics from the Center's Communications Department.

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Welcome to CHIS

The California Health Interview Survey (CHIS) is the nation's largest state health survey and a critical source of data on Californians as well as on the state's various racial and ethnic groups. Policymakers, researchers, health experts, members of the media and others depend on CHIS for credible and comprehensive data on the health of Californians.


 About CHIS

Policymakers, researchers, health experts, members of the media and others depend on the California Health Interview Survey (CHIS) for credible and comprehensive data on the health of Californians. Learn more about who and where CHIS interviews, survey topics, our partners, funders and more in About CHIS.


Survey Design & Methods

Learn about CHIS methodology, questionnaires, sample design by county and race, survey topics, as well as the populations surveyed. Learn more.


    Get CHIS Data

Learn how to quickly get CHIS data through our free, easy-to-use AskCHIS Web tool. Download free public used data files or apply to use sensitive data through our Data Access Center (DAC). Learn more.



Read published reports, policy briefs and fact sheets. See peer-reviewed journal articles or view current CHIS research projects. Learn more.