Data Visualization

Quantile Choropleth

US unemployment rates by county using quantile classification

A choropleth map showing county-level unemployment with ColorBrewer sequential color scheme.

About This Visualization

A choropleth map showing US unemployment rates at the county level. The quantile scale divides the data into 9 equal-sized groups, ensuring each color represents roughly the same number of counties.

Technical Details

Projection: Albers USA for accurate area representation
Classification: Quantile scale with 9 classes
Data: TopoJSON for efficient geography loading
Color Scheme: Sequential blue (ColorBrewer)

How It Works

Colors

Darker blues indicate higher unemployment rates

Quantile

Data divided into 9 equal-sized groups