The CDC\ATSDR Social Vulnerability Index (SVI) is a tool, created by the Geospatial Research, Analysis and Services Program (GRASP), to help public health officials and emergency response planners identify and map the communities that will most likely need support before, during, and after a hazardous event. The tract-level SVI shows the relative vulnerability of the population of every Los Angeles County Census Tract. Tracts are ranked against other tracts in California.

The SVI ranks tracts on 16 social factors, described in detail in the CDC\ATSDR documentation. The tract rankings for individual factors are further grouped into four related themes. Thus each enumeration unit receives a ranking for each Census variable and for each of the four themes, as well as an overall ranking.

See complete documentation here: https://www.atsdr.cdc.gov/placeandhealth/svi/data_documentation_download.html. For additional questions, contact the SVI Lead at svi_coordinator@cdc.gov.

How was this data created?

The CSV file for California SVI was downloaded 11/28/22 from https://www.atsdr.cdc.gov/placeandhealth/svi/data_documentation_download.html. The table was joined to 2020 Census Tracts from the LA County eGIS Data Repository.

Added Data Field:

1. VULNERABILITY (Level of Vulnerability): High (SVI score 0.7501 to 1), Medium to High (SVI score 0.5001 to 0.7500), Low to Medium (SVI score 0.2501 to 0.5000), Low (0 to 0.2500), No data available