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2020 Census Population Counts for Apportionment are Now Available

Starting with the 2008 SAHIE estimates, the SAHIE program updated its methodology to incorporate the estimates of health insurance coverage from the American Community Survey (ACS). The incorporation of the ACS into the modeling procedures has allowed for more detailed income group data as well as a higher level of precision in the estimates.

Additional File Formats

Additional file formats can be accessed in our archives.

2008 - 2018 Small Area Health Insurance Estimates (SAHIE): File Layout

"Data Inputs" describes the data that are used in the models to produce SAHIE estimates. It discusses the sources of each dataset, key concepts, and any adjustments made to the data.

Due to these methodological differences, comparisons between ACS-based SAHIE estimates and earlier years are not recommended. Guidance on comparisons within the ACS-based estimates is available.

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