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choropleth map Syllabification: chor·o·pleth map
Pronunciation: /ˈkôrəˌpleTH ˌmap/

Definition of choropleth map in English:


A map that uses differences in shading, coloring, or the placing of symbols within predefined areas to indicate the average values of a property or quantity in those areas. Compare with isopleth.
Example sentences
  • They also compared a choropleth map showing the number of people living in each state with one showing population density.
  • Care is needed in the interpretation of all maps, and choropleth maps are no exception.
  • On a choropleth map, cartographic convention assigns the darkest color to the highest value.


1930s: choropleth from Greek khōra 'region' + plēthos 'multitude'.

Definition of choropleth map in:
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