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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.

  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.

  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.

  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.

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 We do not publish a confident number we cannot defend.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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