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Vol. VIII · Issue 41 · Reference Archive

The Briefs Archive

Every Census Bureau and ACS release we have cross-checked since 2017, indexed by release type and date. Each entry carries two federal sources, a confidence score, and a published figure you can quote. Bookmark this page; journalists, policy shops, and city desks return to it weekly.

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Indexed October 2025 · 412 briefs

  1. ACS 5-year Confidence 0.97 Oct 17, 2025

    Median household income, U.S. counties, 2019–2023

    $74,580 +2.1% vs. 2018–2022

    Cross-checked against ACS B19013 and the Census Bureau's income inequality tables. Highest county: Loudoun, VA, $162,100. Lowest: Holmes, MS, $28,210.

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  2. Decennial Confidence 0.99 Oct 10, 2025

    2020 Census undercount rates by state, final release

    13 states statistically significant

    Cross-checked against the Post-Enumeration Survey and the Census Bureau's Demographic Analysis benchmark. Six states showed net undercounts; seven showed net overcounts.

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  3. ACS 1-year Confidence 0.94 Sep 26, 2025

    Foreign-born share of U.S. population, 2024

    13.9% highest since 1910

    Cross-checked against the Current Population Survey ASEC supplement and the ACS B05001 series. Confidence scored slightly lower due to CPS sampling variance on the comparison side.

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  4. Population Estimates Confidence 0.96 Sep 12, 2025

    Net domestic migration, metro areas, 2023–2024

    −0.4% first full-year decline since 2010

    Cross-checked against IRS county-to-county migration data and the Census Bureau's components-of-change release. Sun Belt metros led losses; Northeast led gains.

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On the method

Every brief passes two federal sources before it ships.

The confidence score you see on each brief is not a vibe. It is the output of a written protocol. When a Census Bureau release lands, our editors pull a second federal source for the same figure — usually a companion release, an ACS comparison, or a TIGER/Line geographic cross-check — and we only file the brief when the two sources agree to within 0.3 percentage points.

If the two sources disagree by more than 0.3 pp, we publish a methodology note explaining the gap. We do not publish a confident number we cannot defend. The median turnaround from federal release to published brief is 9.4 hours — about six times faster than the Census Bureau's own AmeriFact portal — because the verification step is parallel, not serial.

Modeled and estimated figures are labeled modeled. They never carry the same confidence score as a cross-checked federal release, and they never appear in the archive grid without that label.

— The MyTwoCensus editorial desk

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