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Local Update of Census Addresses (LUCA)

LUCA is the only opportunity offered to local governments to review the Census Bureau's residential address list.

Local government leaders:
Make sure your community gets its fair share of funding in the decade ahead!

Before 2020 Census forms appear in mailboxes, the U.S. Census Bureau needs addresses. If the Bureau doesn’t know that a new subdivision or apartment building has sprung up, residents could go uncounted. That would mean less federal and state funding for your community. And, because the decennial census is the base of your community's estimated population until the next census, a poor count in 2020 will affect your estimate for the next 10 years.

In July 2017, the Census will invite local governments to register to help verify and update a database of all residential addresses through its Local Update of Census Addresses (LUCA) program. Counties, cities, townships, and tribal governments will be asked to review the Census Bureau’s address file for accuracy, and supplement it with new or overlooked addresses. This review will begin in early 2018. 

Learn the Basics:
LUCA Background, What's New, Preparation, and Schedule


What do you need to do right now?

Make sure your county or city is registered for the LUCA program. The Census Bureau mailed registration packets beginning in July 2017 to the highest elected official of your county, city, township, or American Indian reservation. You can help by making sure that your packet doesn’t get accidentally overlooked, and by seeing to it that your county, city, township or American Indian reservation registers to take part in this program. LUCA registrations must be returned to the Census Bureau by December 15, 2017. More information about LUCA can be found at the U.S. Census Bureau's website.

Do you have general questions about LUCA? Please send us an email:

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