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2020 Local Update of Census Addresses (LUCA) Operational Assessment Report

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The 2020 Local Update of Census Addresses (LUCA) operation allowed tribal, state, and local entities the opportunity to review and update the Census Bureau’s residential address list for their jurisdiction. The Census Bureau relies on a complete and accurate address list to reach every living quarter and associated population for inclusion in the decennial census.

After LUCA received Office of Management and Budget (OMB) approval in December 2016, the operation sent out advance notices to eligible tribal, state, county, and local entities in January 2017. Invitation and registration occurred from July 2017 to August 2018, in which 39,327 entities were invited and 11,549 registered for LUCA. Participants reviewed the Census Bureau’s address list and sent their updates back from March through November 2018. The Census Bureau received 8,628 submissions and of those, about 17.5 percent were received late without an extension.

The Census Bureau processed LUCA addresses, conducted LUCA Address Validation, and updated the Master Address File (MAF) from March 2018 to April 2019. Feedback materials were sent to eligible participants from July to September 2019. OMB processed LUCA appeals from September 2019 to February 2020.

This assessment documents the results of the 2020 LUCA operation. It also includes lessons learned gathered from debriefings and observational input from headquarters, regional census centers (RCCs), and National Processing Center (NPC) staff. The report also contains information to assist in implementing address update partnership programs in the future, as well as planning for the Geographic Support Program (GSP) and the 2030 Census.

Page Last Revised - November 28, 2022
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