On February 1, 2023, the Census Bureau held a listening session for tribal leaders to learn about the Proof of Concept for the 2020 Census Detailed Demographic and Housing Characteristics File A (Detailed DHC-A) for public review and feedback. The listening session was followed by a tribal consultation on February 23, 2023. The 30-day public feedback period on the Proof of Concept concluded on March 2. 

This Proof of Concept will be based on 2010 Census data. The Proof of Concept will not include accompanying summary files or a full run of the 2010 Census data. Rather, we are asking users to evaluate data fitness-for-use based on the proposed thresholds and margins of error using metrics and example data.  

The Detailed DHC-A will provide population counts and sex and age statistics for detailed racial and ethnic groups and American Indian and Alaska Native tribes and villages. Improvements in the design of the 2020 Census race and ethnicity questions, as well as improved processing and coding, enabled us to collect more detailed race and ethnicity data in 2020 than ever before. The final Detailed DHC-A based on 2020 Census data is slated for release in August.