Mapping Migration in the United States
Where people who lived in each state in 2012 were born
Each shape represents where the people living in a state were born. Within a state, larger shapes mean a group makes up a larger share of the population.
▻http://www.nytimes.com/2014/08/16/upshot/mapping-migration-in-the-united-states-since-1900.html?abt=0002abg=0&abt=00