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Hurricane Zeta: Data for Potentially Impacted Areas. Learn More.

The 2020 Census, Next Steps and a Heartfelt Thanks. Read More.

Subject Definitions

This document provides definitions and explanations of terms used in AHS tables.

Accuracy of the Data

These documents provide a basic explanation of the sample design, estimation methodology, accuracy of the data, and formulas for statistical testing.

Historical Changes

This document provides a complete list of changes to the questionnaire and the tables that have occurred since the previous survey year.

Questionnaire

The survey questionnaires for Core and Topical Module sections.

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