Percentiles

Percentiles Overview

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.

Field Summary

Browse percentage fields

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Column Name	Data Type	Example	Description
TOTAL_POPULATION_PRCNTL	FLOAT	0.624	Percentile rank of total population across block groups (0 = lowest, 1 = highest).
TOTAL_HOUSEHOLDS_PRCNTL	FLOAT	0.6362	Percentile rank of total households across block groups (0 = lowest, 1 = highest).
MEDIAN_AGE_PRCNTL	FLOAT	0.7463	Percentile rank of median age across block groups (0 = lowest, 1 = highest).
FEMALE_POPULATION_PRCNTL	FLOAT	0.7243	Percentile rank of female population across block groups (0 = lowest, 1 = highest).
MALE_POPULATION_PRCNTL	FLOAT	0.501	Percentile rank of male population across block groups (0 = lowest, 1 = highest).
POPULATION_DENSITY_PRCNTL	FLOAT	0.2368	Percentile rank of population density across block groups (0 = lowest, 1 = highest).
MEDIAN_HOUSEHOLD_INCOME_PRCNTL	FLOAT	0.1704	Percentile rank of median household income across block groups (0 = lowest, 1 = highest).
TOTAL_INCOME_PRCNTL	FLOAT	0.4446	Percentile rank of total income across block groups (0 = lowest, 1 = highest).
GINI_INDEX_PRCNTL	FLOAT	0.9606	Percentile rank of gini index across block groups (0 = lowest, 1 = highest).
POP_ABOVE_POVERTY_LEVEL_PRCNTL	FLOAT	0.6624	Percentile rank of pop above poverty level across block groups (0 = lowest, 1 = highest).

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