Thematic maps are data maps of a specific subject or for a specific purpose. Statistical thematic maps include a variety of
different map types such as choropleth or shaded maps, dot maps, proportional symbol maps, and isarithmic maps. Special
purpose maps generally concentrate on a single theme, such as the Centers of the Population Centers of the U.S. between 1790 and 2000.
Source: U.S. Census Bureau, Geography Division
Cartographic Products Management Branch
Created: September 12, 2001
Last revised: October 06 2005
