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2020 Decennial Census Notes and Errata

Historically, there are a small percentage of cases where a wrong geographic boundary or coding of a housing unit was used to produce the official census population and housing counts for a local area. Geocoding errors can occur when a living quarter such as a house, apartment, or military vessel, is placed in an incorrect location. There may also be processing errors.

The Census Bureau works with tribal, state, and local governments to help ensure a complete and accurate count during each census. Elected officials may request a review of their jurisdiction’s census counts. During the review process, the Census Bureau will not collect any additional data. If a review results in a change, the bureau issues official revised counts to the affected government. All data, geography, and technical documentation notes and errata are published.

Errata Notes

ftp Corrected 2020 Census counts
Download corrected 2020 Census counts by state. Governmental unit (GU) tables are available only for states where there was a CQR change at the GU level.
Page Last Revised - January 23, 2023
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