This page provides our visualizations of the communities
based on the call and SMS connections. Please let us know
what you think in the comment section below. We are also
looking forward to hearing from you about the geographic
Call Data Community Map
Administrative boundaries are often at odds if one compares these to a bottom up approach calculating the regional delineation only based on how people interact. Communities based on call data is one example of how such interaction-based communities can be defined. The result is striking in that some states merge and others split. For example sister states emerge, such as Georgia and Alabama, Mississippi and Louisiana, and Tennessee and Kentucky among others. Pittsburgh (Pennsylvania) and West Virginia form a new "state", while St. Louis (Missouri) expands its reach and splits Illinois into two communities. New Jersey and California also split into two separate communities because of large cities. In contrast, Texas remains whole, despite potentially splitting cities of Dallas, Houston, San Antonio, and Austin. We observe that the inter-city communication is strong enough to hold Texas together.