UCLA California Health Survey Site-where The Data Lives
The official UCLA California Health Survey website is the California Health Interview Survey page from the UCLA Center for Health Policy Research, with the main program hub at https://healthpolicy.ucla.edu/our-work/california-health-interview-survey-chis. The public data portal is AskCHIS at https://www.askchis.com/, and the survey's data access page is https://healthpolicy.ucla.edu/our-work/california-health-interview-survey-chis/access-chis-data.
What CHIS is
California Health Interview Survey, usually called CHIS, is described by UCLA as the nation's largest state health survey and a major source of information on Californians' health and access to care. UCLA's survey page says it is conducted to learn about the health of people in California and the problems they have getting health care. The survey is run by the UCLA Center for Health Policy Research in collaboration with California public health agencies.
The program sits inside UCLA health policy, which helps explain why the site is used by researchers, policymakers, journalists, and community groups looking for statewide health data. UCLA also notes that earlier rounds of the study are available through its website and that new results are released after data collection phases conclude.
Where to go first
If you want the official source, start with the main CHIS page on UCLA's site, then move to AskCHIS for statistics and downloads. The UCLA CHIS data access page is the best place to find the survey's public tools, including neighborhood-level visualization products. For people trying to verify whether a mailed invitation is legitimate, UCLA's "Are You in the Survey?" page is also the relevant official reference.
- Main CHIS program page: UCLA's official survey overview and entry point.
- AskCHIS: Free online data search tool for California, county, and regional estimates.
- Data access page: Links to survey tools such as AskCHIS Neighborhood Edition.
- Survey verification page: Explains how respondents can confirm a mailed CHIS invitation.
Key site destinations
| Destination | Purpose | Best for |
|---|---|---|
| CHIS main page | Official program overview and navigation | General users searching for the UCLA survey site |
| AskCHIS | Searchable public health statistics tool | Quick data lookups by geography |
| Access CHIS Data | Entry to neighborhood and data products | Researchers and analysts needing detailed outputs |
| Are You in the Survey? | Respondent verification and survey participation guidance | Households that received survey mailings |
How the data site works
AskCHIS is UCLA's free online tool for searching health statistics by state, region, county, and, in some cases, neighborhood-level views through related products. UCLA says users can quickly find health numbers for California as a whole or drill down to local geographies. That makes the CHIS site especially useful for people who need a single, authoritative place to retrieve public health estimates without building a custom dataset from scratch.
The site is designed for both public browsing and professional analysis. UCLA describes CHIS as a critical source of data on California's diverse population, which is why the platform is often cited in health reporting and policy work. The presence of a tutorial on the data search tool also suggests the site is built for nontechnical users as well as analysts.
Why it matters
For navigational searches, the answer is simple: the official UCLA California Health Survey site is the CHIS page on the UCLA Center for Health Policy Research website, and the main data tool is AskCHIS. Because UCLA operates the survey and publishes the data tools directly, these pages are the most reliable starting points for anyone trying to find official survey information.
The survey's long-term value comes from its scope. UCLA positions CHIS as a statewide source for understanding population health, access barriers, and differences across communities. That makes the official site useful not just for survey participants, but also for researchers tracking trends over time and comparing counties, regions, and subpopulations.
"AskCHIS, a free online tool, enables anyone to search for quick health statistics about their county or region, or for California as a whole."
Historical context
UCLA Center for Health Policy Research says it was founded in 1994 with a mission to improve public health through objective, evidence-based research and data. CHIS fits that mission by serving as the survey infrastructure behind a large share of California's public health data visibility. The official website therefore functions as both a research gateway and a public information portal, which is why it tends to rank highly for people looking up "UCLA California Health Survey official website".
In practical terms, the survey site is where the data lives, while AskCHIS is where many users actually retrieve estimates. If you are trying to locate the right page quickly, the best path is the CHIS homepage first, then the data access section, then AskCHIS.
Fast navigation path
- Open the official CHIS homepage on UCLA's site.
- Go to the data access section if you need datasets or visualization tools.
- Use AskCHIS for quick county, regional, or statewide statistics.
- Check the survey verification page if you received a mailed invitation.
FAQ
Best source links
UCLA CHIS homepage: https://healthpolicy.ucla.edu/our-work/california-health-interview-survey-chis.
AskCHIS data tool: https://www.askchis.com/.
Data access page: https://healthpolicy.ucla.edu/our-work/california-health-interview-survey-chis/access-chis-data.
Survey verification page: https://healthpolicy.ucla.edu/our-work/california-health-interview-survey-chis/are-you-survey.
Expert answers to Ucla California Health Survey Site Where The Data Lives queries
What is the official UCLA California Health Survey website?
The official site is the California Health Interview Survey page on the UCLA Center for Health Policy Research website, with AskCHIS serving as the public data tool.
Where can I find the survey data?
You can find it through AskCHIS, UCLA's free health statistics search tool, and through the CHIS data access page.
How do I know a survey invitation is real?
UCLA provides an "Are You in the Survey?" page that explains how to verify participation using the secure access code in the mailed letter.
Who runs CHIS?
CHIS is run by the UCLA Center for Health Policy Research in collaboration with California public health agencies.
Is AskCHIS free to use?
Yes, UCLA describes AskCHIS as a free online tool for searching health statistics.