Reuse
Embeddable widgets
Each card is a minimal, noindex preview with a baked-in attribution link back to PlainCities. Because production sends frame-ancestors none, open the preview or link the canonical page, do not rely on third-party iframes.
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Most populated U.S. cities
Top 10 tracked places by Census ACS population, with attribution back to the full ranking.
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Per-state city cards
One card per state, swap the state abbr in the path (e.g. /embed/state/tx). EmbedButton lives on each /state page.
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Open datasets card
Headline city and state coverage with a link to downloadable CSV/JSON datasets.
Widget routes carry noindex,follow so they never compete with the canonical pages.
Downloadable files are CC BY 4.0; upstream Census/FBI terms still apply. See /data.