Estimating county-level SVI

3Si replicated ATSDR’s published SVI methodology to estimate within-state SVI rankings of counties (in addition to our existing estimations of SVI at the levels of census tracts and zip code tabulation areas, or ZCTAs) based on Census data from the 2021 American Community Survey (ACS). The CUSP data model now includes SVI data and rankings that represent the relative social vulnerability of census tracts, ZCTAs, and counties within a state based on the most recent available Census data.

  • The CUSP Population Base now includes county level SVI, in addition to SVI at the census tract and ZCTA levels.
  • SVI at all geographic levels will be refreshed every time Census data is updated in CUSP.


  • The inclusion of county-level SVI data to CUSP provides a more comprehensive view of socio-economic vulnerability that directly or indirectly impacts access to child care and child care funding for
    children and families at three distinct geographic levels.
  •  Enrichment of the CUSP data model with up-to-date SVI data at multiple geographic levels allows states to perform more nuanced correlation and other analysis on child care service and reach data in the context of a widely accepted indicator of socio-economic vulnerability of different geographies across the state.