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13 U.S.C. 4 and 181.
88 FR 17705, Mar. 24, 2023, unless otherwise noted.
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(a) A request for a challenge to a population estimate may be filed any time up to 90 days after the release of the estimate by the Census Bureau. Publication by the Census Bureau on its website (www.census.gov) shall constitute release. Documentation requesting a challenge of any estimate may also be filed any time up to 90 days after the date the Census Bureau, on its own initiative, revises that estimate.
(b) The Census Bureau has the discretion to accept late requests.
[88 FR 17705, Mar. 24, 2023, as amended at 91 FR 2855, Jan. 23, 2026]