California Health Disadvantage Index (HDI)

The Public Health Alliance has developed a composite index to identify cumulative health disadvantage in California. The purpose of this Health Disadvantage Index (HDI) is to prioritize public and private investments, resources and programs. HDI includes diverse non-medical economic, social, political and environmental factors that influence physical and cognitive function, behavior and disease. These factors are often called health determinants or social determinants of health and form the root causes of disadvantage. Indicator data used for HDI comes from publicly available sources and is produced at a census tract level. HDI materials are freely available online for use by communities and public and private agencies.

NEW! Download our HDI Overview Fact Sheet [PDF] for quick reference.

Explore the California Health Disadvantage Index (HDI)

Reports & Data Files
Find reports, technical documentation and data files for download.
HDI Interactive Map
Is your community disadvantaged? Use our interactive map to explore the California HDI.
Decision support, links, and other useful resources, including the HDI Overview Fact Sheet.
HDI & CES 3.0 Comparison Map

Compare the HDI to the CES 3.0 in our new interactive map. NEW! Download our updated HDI 1.1 and CES 3.0 comparison fact sheet.

HDI & CES 2.0 Comparison Map
How does the HDI and CES compare? Use our comparison map to explore the differences.
Download our HDI & CES 2.0 factsheet and see our CES Public Comment Letters for more information.

HDI Contact

Helen Dowling, MPH

Program Associate
Public Health Alliance