Dot Distribution Map

http://www.census.gov/geo/www/mapGallery/2kpopden.html

A dot density map is a map that uses dots to symbolize the presence of a feature in a given area. Usually a dot density map is used to show population density, where each dot represents a given amount of people. The map I chose is the population density of the United States with each dot representing 7,500 people. The higher density of dots in an area represents cities.