A choropleth map shades geographic regions by data value, making spatial patterns in quantitative data instantly visible. It is one of the most popular thematic map types for comparing statistics across countries or states.
This sample maps 2013 wine consumption per capita across all US states, loaded from a JSON data source. A four-stop linear color scale grades each state from light blue to dark navy, and an interactive color range legend at the bottom lets users filter by value. Value labels appear directly on each state, while HTML tooltips display the exact litres-per-capita figure on hover.
Follow the step-by-step Choropleth Map Tutorial to learn how such maps are built. See the Choropleth Map documentation for all configuration options.