Dot distribution Maps

http://www.flatrock.org.nz/topics/new_jersey/where_do_they_live_and_what_do_they_do.htm

A dot map is a map type which uses dot symbols to show the presence of a particular feature. This is a dot map which represents the location of people throughout New York State. As evident in the map, the highest concentration of people is in the northeast part of the state.