Nominal Area Chloropleth Map

http://www.ilstu.edu/~jrcarter/Geo204/Choro/Tom/calif-correct-4-quartiles%7B2%7D.gif

This illustrates an example of the nominal area chloropleth map which is a type of chloropleth map used to display nominal data which are items that are typically categorical.  When we say categorical we mean that they belong to a specific definable category such as colors, ethnic groups, or religious groups.  Above is an example in California with the percent of black condo owners who live there being plotted.