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Percentiles

Percentiles​

The Percentiles table ranks each geography relative to all geographies in the nation — not just within its state.
A percentile of 0.92 means that area scores higher than 92% of all U.S. geographies for that metric.

🟡 Note: Percentiles are always calculated against national distributions (e.g., all block groups in the U.S.), not within a state or county.

Use when:​

  • You want to highlight top/bottom performers (e.g., bottom 10% of income).
  • You’re building equity dashboards or identifying priority zones.
  • You need filters for visualizations (e.g., show only tracts below the 25th percentile).
  • You’re creating models or indexes that require standardized, relative values.