15 CFR § 90.6 - § 90.6 When a request for a challenge may be filed.
---
identifier: "/us/cfr/t15/s90.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "15 CFR § 90.6 - § 90.6 When a request for a challenge may be filed."
title_number: 15
title_name: "Commerce and Foreign Trade"
section_number: "90.6"
section_name: "§ 90.6 When a request for a challenge may be filed."
chapter_name: "BUREAU OF THE CENSUS, DEPARTMENT OF COMMERCE"
part_number: "90"
part_name: "PROCEDURE FOR CHALLENGING POPULATION ESTIMATES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "13 U.S.C. 4 and 181."
regulatory_source: "88 FR 17705, Mar. 24, 2023, unless otherwise noted."
cfr_part: "90"
---
# 90.6 § 90.6 When a request for a challenge may be filed.
(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]