D Datumbrief

Wednesday, August 26, 2026 Independent intelligence built from official public data Official caches

About

Official U.S. public data. Census first.

Datumbrief is an English-language site for U.S. state and county population and income. It uses official APIs only.

What this is

The statistical source is the U.S. Census Bureau American Community Survey Detailed Tables:

  • ACS 5-Year (acs/acs5, vintage 2024) for every cached state and county.
  • ACS 1-Year (acs/acs1, vintage 2024) when the Census Bureau publishes the geography. Official 1-Year coverage is areas with populations of 65,000+.

Discovery starts at census.gov/data/developers and api.census.gov/data.html.

Confirmed variables from the official 2024 ACS 5-Year and ACS 1-Year variables/{ID}.json endpoints:

  • B01003_001E — total population
  • B19013_001E — median household income in 2024 inflation-adjusted dollars
  • B19113_001E — median family income in 2024 inflation-adjusted dollars
  • B19301_001E — per capita income in 2024 inflation-adjusted dollars

What this is not

  • We do not crawl Data.gov or any CKAN catalog.
  • We do not scrape census.gov HTML tables.
  • Web pages never call the Census API. php tools/sync.php fetches; php tools/publish.php writes briefs; pages read MySQL.
  • We do not invent population or income numbers. An empty cache stays empty on the page. Counties without a 1-Year estimate stay null.

How pages get here

CLI sync stores official JSON in MySQL. CLI publish generates briefs from those places rows with templates. A weekday cron can run both. See methodology.

Attribution

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

This product uses the U.S. Bureau of Labor Statistics Public Data API but is not endorsed or certified by the Bureau of Labor Statistics.

Company facts are read from the U.S. Securities and Exchange Commission EDGAR companyfacts API. This product is not affiliated with or endorsed by the SEC.

This product uses the World Bank Open Data API but is not endorsed or certified by the World Bank.

This product uses the Eurostat Statistics API but is not endorsed or certified by Eurostat or the European Commission.

Official APIs actually used: Census Data API (acs/acs5, acs/acs1), BLS Public Data API, SEC EDGAR companyfacts, World Bank Open Data, and Eurostat Statistics API. Data.gov HTML is not crawled.

Official documents

Who runs it

A small independently operated publication. Contact pygoda6@gmail.com.